Tor Helleseth's picture
Tor
Helleseth
Professor
Visit Address: 
HIB - Thormøhlensgt. 55
5020 Bergen
Postal Address: 
Postboks 7803
5020 Bergen
Phone: 
+47 55 58 41 60
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Books
  • Budaghyan, Lilya; Helleseth, Tor; Parker, Matthew Geoffrey. 2013. Preproceedings, The International Workshop on Coding and Cryptography WCC 2013. Universitetet i Bergen. 576 pages. ISBN: 978-82-308-2269-2.
  • Helleseth, Tor; Jedwab, Jonathan. 2012. Sequences and Their Applications - SETA 2012 7th International Conference Waterloo, ON, Canada, June 2012 Proceedings. Springer. 337 pages. ISBN: 978-3-642-30614-3.
  • Hasan, M. Anwar; Helleseth, Tor. 2010. Arithmetic of Finite Fields, WAIFI 2010. Springer. 268 pages. ISBN: 3-642-13796-2.
  • Helleseth, Tor; Kumar, P. Vijay; Ytrehus, Øyvind. 2007. 2007 IEEE Information Theory Workshop on Information Theory for Wireless Networks. IEEE Press. 247 pages. ISBN: 1-4244-1199-8.
  • Helleseth, Tor; Kumar, P. V.; Yang, K. 2001. Sequences and their applications-SETA'01, Proceedings of SETA'01. Springer. 324 pages. ISBN: 1-85233-529-7.
Journal articles
  • Hong, Seokbeom; Park, Hosung; No, Jong-Seon; Helleseth, Tor; Kim, Young-Sik. 2014. Near-optimal partial hadamard codebook construction using binary sequences obtained from quadratic residue mapping. IEEE Transactions on Information Theory. 60: 3698-3705. doi: 10.1109/TIT.2014.2314298
  • Li, Chaoyun; Zeng, Xiangyong; Helleseth, Tor; Li, Chunlei; Hu, Lei. 2014. The properties of a class of linear FSRs and their applications to the construction of nonlinear FSRs. IEEE Transactions on Information Theory. 60: 3052-3061. doi: 10.1109/TIT.2014.2310748
  • Li, Chunlei; Li, Nian; Helleseth, Tor; Ding, Cunsheng. 2014. The weight distributions of several classes of cyclic codes from APN monomials. IEEE Transactions on Information Theory. 60: 4710-4721. doi: 10.1109/TIT.2014.2329694
  • Li, Nian; Li, Chunlei; Helleseth, Tor; Ding, Cunsheng; Tang, Xiaohu. 2014. Optimal ternary cyclic codes with minimum distance four and five. Finite Fields and Their Applications. 30: 100-120. doi: 10.1016/j.ffa.2014.06.001
  • Li, Nian; Tang, Xiaohu; Helleseth, Tor. 2014. New M-ary sequences with low autocorrelation from interleaved technique. Designs, Codes and Cryptography. 73: 237-249. doi: 10.1007/s10623-013-9821-8
  • Wu, Gaofei; Li, Nian; Helleseth, Tor; Zhang, Yuqing. 2014. Some classes of monomial complete permutation polynomials over finite fields of characteristic two. Finite Fields and Their Applications. 28: 148-165. doi: 10.1016/j.ffa.2014.01.011
  • Xia, Yongbo; Chen, Shaoping; Helleseth, Tor; Li, Chunlei. 2014. Cross-correlation between a p-ary m-sequence and its all decimated sequences for d = (pm+1)(pm+p-1)/p+1. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. E97-A: 964-969. doi: 10.1587/transfun.E97.A.964
  • Cai, Han; Zeng, Xiangyong; Helleseth, Tor; Tang, Xiaohu; Yang, Yang. 2013. A New construction of zero-difference balanced functions and its applications. IEEE Transactions on Information Theory. 59: 5008-5015. doi: 10.1109/TIT.2013.2255114
  • Ding, Cunsheng; Helleseth, Tor. 2013. Optimal ternary cyclic codes from monomials. IEEE Transactions on Information Theory. 59: 5898-5904. doi: 10.1109/TIT.2013.2260795
  • Helleseth, Tor; Jansen, Cees J. A.; Kazymyrov, Oleksandr; Kholosa, Alexander. 2013. State space cryptanalysis of the MICKEY cipher. Information Theory and Applications. doi: 10.1109/ITA.2013.6502941
  • Jia, Wenjie; Zeng, Xiangyong; Li, Chunlei; Helleseth, Tor; Hu, Lei. 2013. Permutation polynomials with low differential uniformity over finite fields of odd characteristic. Science China Mathematics. 56: 1429-1440. doi: 10.1007/s11425-013-4599-8
  • Li, Nian; Helleseth, Tor; Kholosa, Alexander; Tang, Xiaohu. 2013. On the Walsh transform of a class of functions From niho exponents. IEEE Transactions on Information Theory. 59: 4662-4667. doi: 10.1109/TIT.2013.2252053
  • Li, Nian; Helleseth, Tor; Tang, Xiaohu. 2013. Further results on a class of permutation polynomials over finite fields. Finite Fields and Their Applications. 22: 16-23. doi: 10.1016/j.ffa.2013.02.004
  • Li, Nian; Helleseth, Tor; Tang, Xiaohu; Kholosa, Alexander. 2013. Several new classes of bent functions from Dillon exponents. IEEE Transactions on Information Theory. 59: 1818-1831. doi: 10.1109/TIT.2012.2229782
  • Budaghyan, Lilya; Carlet, Claude; Helleseth, Tor; Kholosa, Alexander. 2012. Generalized bent functions and their relation to Maiorana-McFarland class. IEEE International Symposium on Information Theory. Proceedings. 4 pages.
  • Budaghyan, Lilya; Carlet, Claude; Helleseth, Tor; Kholosa, Alexander; Mesnager, Sihem. 2012. Further results on Niho bent functions. IEEE Transactions on Information Theory. 58: 6979-6985. doi: 10.1109/TIT.2012.2206557
  • Gong, Guang; Helleseth, Tor; Hu, Honggang. 2012. A three-valued walsh transform from decimations of Helleseth-Gong sequences. IEEE Transactions on Information Theory. 58: 1158-1162. doi: 10.1109/TIT.2011.2169297
  • Gong, Guang; Helleseth, Tor; Hu, Honggang; Kholosa, Alexander. 2012. On the dual of certain ternary weakly regular bent functions. IEEE Transactions on Information Theory. 58: 2237-2243. doi: 10.1109/TIT.2011.2176312
  • Helleseth, Tor; Kholosa, Alexander; Mesnager, Sihem. 2012. Niho bent functions and Subiaco hyperovals. Contemporary Mathematics. 579: 91-101.
  • Jia, Wenjie; Zeng, Xiangyong; Helleseth, Tor; Li, Chunlei. 2012. A class of binomial bent functions over the finite fields of odd characteristic. IEEE Transactions on Information Theory. 58: 6054-6063. doi: 10.1109/TIT.2012.2199736
  • Li, Chunlei; Helleseth, Tor. 2012. New Nonbinary Sequence Families with Low Correlation and Large Linear Span. IEEE International Symposium on Information Theory. Proceedings. 5 pages.
  • Luo, Jinquan; Helleseth, Tor. 2012. Binary Niho sequences with four-valued cross correlations. IEEE International Symposium on Information Theory. Proceedings. 5 pages.
  • Budaghyan, Lilya; Helleseth, Tor. 2011. New commutative semifields defined by new PN multinomials. Cryptography and Communications. 3: 1-16.
  • Budaghyan, Lilya; Helleseth, Tor. 2011. ON ISOTOPISMS OF COMMUTATIVE PRESEMIFIELDS AND CCZ-EQUIVALENCE OF FUNCTIONS. International Journal of Foundations of Computer Science. 22: 1243-1258. doi: 10.1142/S0129054111008684
  • Gong, Guang; Rønjom, Sondre; Helleseth, Tor; Hu, Honggang. 2011. Fast discrete Fourier spectra attacks on stream ciphers. IEEE Transactions on Information Theory. 57: 5555-5565. doi: 10.1109/TIT.2011.2158480
  • Helleseth, Tor; Kholosa, Alexander. 2011. Crosscorrelation of m-sequences, exponential sums, bent functions and Jacobsthal sums. Cryptography and Communications. 3: 281-291. doi: 10.1007/s12095-011-0048-0
  • Helleseth, Tor; Kholosa, Alexander; Mesnager, Sihem. 2011. Niho bent functions and Subiaco hyperovals. Contemporary Mathematics. 579: 91-101. doi: 10.1090/conm/579/11522
  • Li, Nian; Tang, Xiaohu; Helleseth, Tor. 2011. Several Classes of Codes and Sequences Derived From a Z(4)-Valued Quadratic Form. IEEE Transactions on Information Theory. 57: 7618-7628. doi: 10.1109/TIT.2011.2156382
  • Luo, Jinquan; Helleseth, Tor. 2011. Constant Composition Codes as Subcodes of Cyclic Codes. IEEE Transactions on Information Theory. 57: 7482-7488. doi: 10.1109/TIT.2011.2161631
  • Tang, X; Helleseth, Tor. 2011. Generic Construction of Quaternary Sequences of Period 2N With Low Correlation From Quaternary Sequences of Odd Period N. IEEE Transactions on Information Theory. 57: 2295-2300. doi: 10.1109/TIT.2011.2110290
  • Budaghyan, Lilya; Helleseth, Tor. 2010. Planar functions and commutative semifields. Tatra Mountains Mathematical Publications. 45: 15-25.
  • Grosek, Otokar; Helleseth, Tor; Kholosa, Alexander; Nemoga, Karol. 2010. (Guest Editorial -) Preface (NILCRYPT'10). Tatra Mountains Mathematical Publications. 45. 2 pages.
  • Hassanzadeh, Mehdi; Helleseth, Tor. 2010. Algebraic Attack on the Alternating Step(r,s) Generator. IEEE International Symposium on Information Theory. Proceedings. 2493-2497.
  • Hassanzadeh, Mehdi; Helleseth, Tor. 2010. Security Analysis of the Step (D,K) Generator Respect to its Parameters. International Journal of Cryptology Research. 2: 39-49.
  • Helleseth, Tor. 2010. Crosscorrelation of m-sequences, exponential sums and Dickson polynomials. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. E93: 2212-2219. doi: 10.1587/transfun.E93.A.2212
  • Helleseth, Tor; Kholosa, Alexander. 2010. Sequences, bent functions and Jacobsthal sums. Lecture Notes in Computer Science. 6338: 416-429.
  • Helleseth, Tor; Kholosa, Alexander. 2010. New Binomial Bent Functions Over the Finite Fields of Odd Characteristic. IEEE Transactions on Information Theory. 56: 4646-4652. doi: 10.1109/TIT.2010.2055130
  • Helleseth, Tor; Kholosa, Alexander. 2010. x^{2^l}+x+a and related affine polynomials over the finite fields of GF(2^k). Cryptography and Communications. 2: 85-109.
  • Helleseth, Tor; Kholosa, Alexander. 2010. New binomial bent functions over the finite fields of odd characteristic. IEEE International Symposium on Information Theory. Proceedings. 1277-1281. doi: 10.1109/TIT.2010.2055130
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2009. Divisibility properties of classical binary Kloosterman sums. Discrete Mathematics. 309: 3975-3984. doi: 10.1016/j.disc.2008.11.010
  • Helleseth, Tor. 2009. Linear and nonlinear sequences and applications to stream ciphers. Contemporary Mathematics. 21-45.
  • Helleseth, Tor; Hollmann, Henk; Kholosa, Alexander; Wang, Zeying; Xiang, Qing. 2009. Proofs of two conjectures on ternary weakly regular bent functions. IEEE Transactions on Information Theory. 55: 5272-5283. doi: 10.1109/TIT.2009.2030465
  • Helleseth, Tor; Hu, Lei; Kholosa, Alexander; Zeng, Xiangyong; Li, Nian; Jiang, Wenfeng. 2009. Period-different m-sequences with at most four-valued cross correlation. IEEE Transactions on Information Theory. 55: 3305-3311. doi: 10.1109/TIT.2009.2021312
  • Johansen, Aina; Helleseth, Tor. 2009. A family of $m$ -sequences with five-valued cross correlation. IEEE Transactions on Information Theory. 55: 880-887. doi: 10.1109/TIT.2008.2009810
  • Johansen, Aina; Helleseth, Tor; Kholosa, Alexander. 2009. Further results on m-sequences with five-valued cross correlation. IEEE Transactions on Information Theory. 55: 5792-5802. doi: 10.1109/TIT.2009.2032854
  • Tang, Xiaohu; Helleseth, Tor; Fan, Pingzhi. 2009. A new optimal quaternary sequence family of length 2(2(n)-1) obtained from the orthogonal transformation of Families B and C. Designs, Codes and Cryptography. 53: 137-148. doi: 10.1007/s10623-009-9294-y
  • Tang, Xiaohu; Helleseth, Tor; Hu, Lei; Jiang, Wenfeng. 2009. Two new families of optimal binary sequences obtained from quaternary sequences. IEEE Transactions on Information Theory. 53: 1833-1840. doi: 10.1109/TIT.2009.2013023
  • Budaghyan, Lilya; Helleseth, Tor. 2008. New perfect nonlinear multinomials over F_p^{2k}}for any odd prime p. Lecture Notes in Computer Science. 5203: 403-414.
  • Charpin, Pascale; Helleseth, Tor. 2008. Editorial: In memory of Hans Dobbertin. Designs, Codes and Cryptography. 49: 1-2. doi: 10.1007/s10623-008-9186-6
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2008. On cosets of weight 4 of BCH(2^m, 8), m even, and exponential sums. SIAM Journal on Discrete Mathematics. 23: 59-78. doi: 10.1137/070692649
  • Ding, Cunsheng; Helleseth, Tor; Ytrehus, Øyvind. 2008. Special issue dedicated to Professor Torleiv Kløve for his 65th birthday - Preface. Designs, Codes and Cryptography. 48: 109-110. doi: 10.1007/s10623-008-9169-7
  • Helleseth, Tor; Kholosa, Alexander. 2008. On the equation x(2l+1)+x+a=0 over GF(2(k)). Finite Fields and Their Applications. 14: 159-176. doi: 10.1016/j.ffa.2007.09.009
  • Helleseth, Tor; Kholosha, Alexander. 2008. $m$-Sequences of Lengths $2^{2k}-1$ and $2^k-1$ with at Most Four-Valued Cross Correlation. Lecture Notes in Computer Science. 5203: 106-120.
  • Jansen, Cees J.A.; Helleseth, Tor; Kholosha, Alexander. 2008. Cascade Jump Controlled Sequence Generator and Pomaranch Stream Cipher. Lecture Notes in Computer Science. 4986: 224-243.
  • Johansen, Aina; Helleseth, Tor; Tang, Xiaohu. 2008. The correlation distribution of quaternary sequences of period 2(2(n)-1). IEEE Transactions on Information Theory. 54: 3130-3139. doi: 10.1109/TIT.2008.924727
  • Tang, Xiaohu; Helleseth, Tor; Johansen, Aina. 2008. On the correlation distribution of Kerdock sequences. Lecture Notes in Computer Science. 5203: 121-129.
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2007. The divisibility modulo 24 of Kloosterman sums on GF(2^m), m odd. Journal of combinatorial theory. Series A (Print). 114: 322-338. doi: 10.1016/j.jcta.2006.06.002
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2007. Propagation characteristics of x --> x^{-1} and Kloostman sums. Finite Fields and Their Applications. 13: 366-381. doi: 10.1016/j.ffa.2005.08.007
  • Ding, Cunsheng; Helleseth, Tor; Kløve, Torleiv; Wang, Xuesong. 2007. A generic construction of cartesian authentication codes. IEEE Transactions on Information Theory. 53: 2229-2235. doi: 10.1109/TIT.2007.896872
  • Helleseth, Tor; Kholosa, Aleksander; Ness, Geir Jarle. 2007. Characterization of m-sequences of length 2^{2k}-1 and 2^k-1 with three-valued crosscorrelation. IEEE Transactions on Information Theory. 53: 2236-2245. doi: 10.1109/TIT.2007.896881
  • Helleseth, Tor; Kholosa, Oleksandr. 2007. On the dual of monomial quadratic p-ary bent functions. Lecture Notes in Computer Science. 4893: 50-61.
  • Helleseth, Tor; Lahtonen, Jyrki; Rosendahl, Petri. 2007. On Niho type cross-correlation functions of m-sequences. Finite Fields and Their Applications. 13: 305-317. doi: 10.1016/j.ffa.2005.09.004
  • Ness, Geir Jarle; Helleseth, Tor. 2007. A new family of ternary almost perfect nonlinear mappings. IEEE Transactions on Information Theory. 53: 2581-2586. doi: 10.1109/TIT.2007.899508
  • Ness, Geir Jarle; Helleseth, Tor. 2007. A new family of four-valued cross correlation between m-sequences of different lengths. IEEE Transactions on Information Theory. 53: 4308-4313. doi: 10.1109/TIT.2007.907447
  • Rønjom, Sondre; Gong, Guang; Helleseth, Tor. 2007. On attacks on filtering generators using linear subspace structures. Lecture Notes in Computer Science. 4893: 204-217.
  • Rønjom, Sondre; Gong, Guang; Helleseth, Tor. 2007. A survey of recent attacks on the filter generator. Lecture Notes in Computer Science. 4851: 7-17.
  • Rønjom, Sondre; Helleseth, Tor. 2007. A new attack on the filter generator. IEEE Transactions on Information Theory. 53: 1752-1758. doi: 10.1109/TIT.2007.894690
  • Rønjom, Sondre; Helleseth, Tor. 2007. Attacking the filter generator over GF(2^m). Lecture Notes in Computer Science. 4547: 264-275.
  • Rønjom, Sondre; Helleseth, Tor. 2007. The linear vector space spanned by the nonlinear filter generator. Lecture Notes in Computer Science. 4893: 169-183.
  • Tang, Xiaohu; Helleseth, Tor; Hu, L.; Jiang, W. 2007. A new family of Gold-like sequences. Lecture Notes in Computer Science. 4893: 62-69.
  • Bassalygo, Leonid; Dodunekov, Stefan; Helleseth, Tor; Zinoviev, Victor. 2006. The Gray-Rankin bound for nonlinear codes. Problems of Information Transmission. 42: 197-203.
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor A. 2006. The coset distribution of triple-error-correcting binary primitive BCH codes. IEEE Transactions on Information Theory. 52: 1727-1732. doi: 10.1109/TIT.2006.871605
  • Dobbertin, Hans; Felke, Patrick; Helleseth, Tor; Rosendahl, Petri. 2006. Niho type cross-correlation functions via Dickson polynomials and Kloosterman sums. IEEE Transactions on Information Theory. 52: 613-627. doi: 10.1109/TIT.2005.862094
  • Gong, Guang; Helleseth, Tor; Song, Hong-yeop; Yang, Kyeongcheol. 2006. Preface. Lecture Notes in Computer Science. 4086: V-VI.
  • Helleseth, Tor; Jansen, Cees J.A.; Khazaei, Shahram; Kholosa, Oleksandr. 2006. Security of jump controlled sequence generators for stream ciphers. Lecture Notes in Computer Science. 4086: 141-152.
  • Helleseth, Tor; Kholosa, Oleksandr. 2006. Monomial and quadratic bent functions over the finite fields of odd characteristic. IEEE Transactions on Information Theory. 52: 2018-2032. doi: 10.1109/TIT.2006.872854
  • Molland, Håvard; Helleseth, Tor. 2006. Linear properties in T-functions. IEEE Transactions on Information Theory. 52: 5151-5157.
  • Ness, Geir Jarle; Helleseth, Tor. 2006. A new three-valued crosscorrelation between m-sequences of different lengths. IEEE Transactions on Information Theory. 52: 4695-4701.
  • Ness, Geir Jarle; Helleseth, Tor. 2006. Cross correlation of m-sequences of different lengths. IEEE Transactions on Information Theory. 52: 1637-1648. doi: 10.1109/TIT.2006.871049
  • Ness, Geir Jarle; Helleseth, Tor; Kholosa, Oleksandr. 2006. On the correlation distribution of the Coulter-Matthews decimation. IEEE Transactions on Information Theory. 52: 2241-2247. doi: 10.1109/TIT.2006.872857
  • Helleseth, Tor; Kløve, Torleiv; Levenshtein, Vladimir. 2005. Error-correction capability of binary linear codes. IEEE Transactions on Information Theory. 51: 1408-1423.
  • Helleseth, Tor; Rosendahl, Petri. 2005. New pairs of m-sequences with four-level cross-correlation. Finite Fields and Their Applications. 11: 674-683.
  • Helleseth, Tor; Sarwate, Dilip; Song, Hong-yeop; Yang, Kyeongcheol. 2005. Preface. Lecture Notes in Computer Science. 3486. 2 pages.
  • Kim, SH; No, Jong-seon; Chung, HB; Helleseth, Tor. 2005. New cyclic relative difference sets constructed from d-homogeneous functions with difference-balanced property. IEEE Transactions on Information Theory. 51: 1155-1163.
  • Schaathun, Hans Georg; Helleseth, Tor. 2005. The second support weight distribution of the Kasami codes. IEEE Transactions on Information Theory. 51: 2892-2894.
  • Zinoviev, Victor; Helleseth, Tor; Charpin, Pascale. 2005. On cosets of weight 4 of binary BCH codes of minimum distance 8 and exponential sums. Problems of Information Transmission. 41: 331-348.
  • Helleseth, Tor; Kløve, Torleiv; Levenshtein, Vladimir. 2004. The simplex codes and other even-weight binary linear codes for error correction. IEEE Transactions on Information Theory. 50: 2818-2823.
  • Helleseth, Tor; Lahtonen, Jyrki; Ranto, Kalle. 2004. A simple proof to the minimum distance of Z_4-Linear Goethals codes,. Journal of Complexity. 20: 297-304.
  • Helleseth, Tor; Maas, Martijn; Mathiassen, John Erik; Seegers, Toon. 2004. Linear complexity over F_p of Sidel'nikov sequences. IEEE Transactions on Information Theory. 50: 2468-2472.
  • Helleseth, Tor; Mykkeltveit, Johannes. 2004. A proof of Simmons's; conjecture. Designs, Codes and Cryptography. 33: 39-43.
  • Helleseth, Tor; Schaathun, Hans Georg. 2004. On the (2,1)-separating weight of the Kerdock code. IEEE Transactions on Information Theory. 50: 3312-3315.
  • Helleseth, Tor; Shin, Dong-joon; No, Jong-seon. 2004. On the p-rank and characteristic polynomials of cyclic difference sets. Designs, Codes and Cryptography. 33: 23-37.
  • Helleseth, Tor; Voloch, José Felipe. 2004. Double circulant quadratic residue codes. IEEE Transactions on Information Theory. 50: 2154-2155.
  • Helleseth, Tor; Zinoviev, Victor. 2004. On a new identity for Kloosterman sums and nonlinear systems of equations over finite fields over characteristic 2. Discrete Mathematics. 274: 109-124.
  • Jang, J.w.; Kim, Y.s.; No, Jong-seon; Helleseth, Tor. 2004. New family of p-ary sequences with optimal correlation property and large linear span. IEEE Transactions on Information Theory. 50: 1839-1844.
  • Kim, Young-Sik; Jang, Ji-Woong; No, Jong-Seon; Helleseth, Tor. 2004. New constructions of p-ary bent sequences. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. E87A: 489-494.
  • Molland, Håvard; Helleseth, Tor. 2004. An improved correlation attack against irregular clocked and filtered keystream generators. Lecture Notes in Computer Science. 3152: 373-389.
  • Molland, Håvard; Mathiassen, John Erik; Helleseth, Tor. 2004. Improved fast correlation attack using low rate codes. Lecture Notes in Computer Science. 2898: 67-81.
  • No, JS; Shin, DJ; Helleseth, Tor. 2004. On the p-ranks and characteristic polynomials of cyclic difference sets. Designs, Codes and Cryptography. 33: 23-37.
  • Shin, Dong-joon; Kumar, Vijay; Helleseth, Tor. 2004. An Assmus-Mattson-type approach for identifying 3-designs from linear codes over Z_4. Designs, Codes and Cryptography. 31: 75-92.
  • Yang, KC; Helleseth, Tor. 2004. On the minimum distance of array codes as LDPC codes. IEEE Transactions on Information Theory. 49: 3268-3271.
  • Zinoviev, Victor; Helleseth, Tor. 2004. On weight distributions of shifts of Goethals-like codes. Problems of Information Transmission. 40: 118-134.
  • Helleseth, Tor; Kim, S.H.; No, J.S. 2003. Linear complexity over $F_p$ and trace representation of Lempel-Cohn-Eastman sequences. IEEE Transactions on Information Theory. 49: 1548-1552.
  • Helleseth, Tor; Kløve, Torleiv; Levenshtein, Vladimir. 2003. Hypercubic 4 and 5-designs from double-error-correcting BCH codes. Designs, Codes and Cryptography. 28: 265-282.
  • Helleseth, Tor; Parker, Matthew Geoffrey. 2003. Logarithm Cartesian Authentication Codes. Information and Computation. 184: 93-108. Published 2003-07-10.
  • Schaathun, Hans Georg; Helleseth, Tor. 2003. Separating and intersecting properties of BCH and Kasami codes. Lecture Notes in Computer Science. 2898: 52-65.
  • Shin, D.J.; Kumar, P. V.; Helleseth, Tor. 2003. 3-Designs from the $Z_4$ Goethals codes via a new Kloosterman sum identity. Designs, Codes and Cryptography. 28: 247-263.
  • Sze, T.W.; Chanson, S.; Ding, Cunsheng; Helleseth, Tor; Parker, Matthew. 2003. Logarithm Cartesian Authentication Codes. Information and Computation. 184: 93-108.
  • Yang, K; Helleseth, Tor. 2003. On the minimum distance of array codes as LDPC codes. IEEE Transactions on Information Theory. 49: 3268-3272.
  • Ding, Cunsheng; Helleseth, Tor; Niederreiter, Harald; Xing, Chaoping. 2002. The minimum distance of the duals of the binary irreducible codes. IEEE Transactions on Information Theory. 48: 2679-2689.
  • Hamada, Noboru; Helleseth, Tor. 2002. The nonexistence of a ternary [97,6,63] code. Journal of Statistical Planning and Inference. 106: 485-507.
  • Helleseth, Tor; Gong, G. 2002. New nonbinary sequences with ideal two-level autocorrelation function. IEEE Transactions on Information Theory. 48: 2868-2872.
  • Ding, Cunsheng; Helleseth, Tor; Martinsen, Halvard. 2001. New families of binary sequences with optimal three-level autocorrelation. IEEE Transactions on Information Theory. 47: 428-433.
  • Dobbertin, Hans; Helleseth, Tor; Kumar, P. V.; Martinsen, Halvard. 2001. Ternary m-sequences with three-valued crosscorrelation function: Two new decimations. IEEE Transactions on Information Theory. 47: 1472-1482.
  • Helleseth, Tor; Kumar, P. V.; Martinsen, Halvard. 2001. A new family of ternary sequences with ideal two-level autocorrelation function. Designs, Codes and Cryptography. 23: 157-166.
  • Helleseth, Tor; Rong, Chunming; Yang, K. 2001. On t-designs for codes over Z_4. Discrete Mathematics. 238: 67-80.
  • Helleseth, Tor; Rong, Chunming; Yang, K. 2001. New 3-designs for Goethals codes over $Z_4$. Discrete Mathematics. 226. 403-409.
  • Helleseth, Tor; Rong, Chunming; Yang, Kyeongcheol. 2001. On t-designs from Codes over Z4. Discrete Mathematics. 238: 67-80.
  • Helleseth, Tor; Rong, Chunming; Yang, Kyeongcheol. 2001. New 3-Designs from Goethals Codes over Z4. Discrete Mathematics. 226: 403-409.
  • Helleseth, Tor; Rong, Chunming; Yang, Kyeongcheol. 2001. New 3-Designs from Goethals Codes over Z4. Discrete Mathematics. 226: 403-409.
  • Helleseth, Tor; Rong, Chunming; Yang, Kyeongcheol. 2001. On t-designs from Codes over Z4. Discrete Mathematics. 238: 67-80.
  • Helleseth, Tor; Zinoviev, Victor. 2001. On coset weight distribution of the $Z_4$-linear Goethals code. IEEE Transactions on Information Theory. 47: 1758-1773.
  • Helleseth, Tor; Zinoviev, Victor. 2001. Codes with the same coset weight distribution as the $Z_4$-linear Goethals codes. IEEE Transactions on Information Theory. 47: 1589-1596.
  • No, J.S.; Chung, H; Song, Hong-yeop; Yang, K; Lee, J.D.; Helleseth, Tor. 2001. New construction for binary sequences of period $p^m-1$ with optimal autocorrelation using $(z+1)^d+az^d+b$. IEEE Transactions on Information Theory. 47: 1638-1644.
  • Shin, D.J.; Kumar, P. V.; Helleseth, Tor. 2001. 5-Designs for the lifted Golay code over Z_4 via an Assmuss-Mattson-type approach. Discrete Mathematics. 241: 479-487.
  • Chang, A; Gaal, P; Golomb, S. W.; Helleseth, Tor; Gong, G; Kumar, P. V. 2000. On a conjectured ideal autocorrelation sequence and a relation to a triple-error-correcting cyclic code,. IEEE Transactions on Information Theory. 46: 474-485.
  • Ding, Cunsheng; Helleseth, Tor; Lam, K. Y. 2000. Duadic sequences of prime lengths. Discrete Mathematics. 218: 33-49.
  • Hamada, Noboru; Helleseth, Tor. 2000. The nonexistence of some ternary linear codes and some updates of the bounds for n_3(6,d), 1<=d<=243. Mathematica Japonica. 52: 31-43.
  • Hamada, Noboru; Helleseth, Tor. 2000. Arcs, blocking sets and minihypers. Computers and Mathematics with Applications. 39: 157-169.
  • Hamada, Noboru; Helleseth, Tor; Martinsen, Halvard; Ytrehus, Øyvind. 2000. There is no ternary [28,6,18] code. IEEE Transactions on Information Theory. 46: 1550-1554.
  • Duursma, Iwan; Helleseth, Tor; Rong, Chunming; Yang, Kyeongcheol. 1999. Split weight enumerators for the Preparata Codes with applications to designs. Designs, Codes and Cryptography. 18: 103-124.
  • Duursma, Iwan; Helleseth, Tor; Rong, Chunming; Yang, Kyeongcheol. 1999. Split weight enumerators for the Preparata Codes with applications to designs. Designs, Codes and Cryptography. 18: 103-124.
Reports and theses
  • Helleseth, Tor; Ytrehus, Øyvind. 2003. Lecture Notes for the International Mini-workshop: Coding for Kløve. Reports in Informatics. 259. Institutt for informatikk, UiB, Bergen. 200 pages.
Book sections
  • Helleseth, Tor; Ytrehus, Øyvind. 2013. Personnummerering i Norge: Litt anvendt kodeteori og økonomi. Kapittel, pages 162-173. In:
    • Tøssebro, Erlend; Meling, Hein. 2013. Norsk informatikkonferanse NIK 2013, Universitetet i Stavanger, 18. - 20.november 2013. Akademika forlag. ISBN: 978-82-321-0365-2.
  • Budaghyan, Lilya; Carlet, Claude; Helleseth, Tor; Kholosa, Alexander. 2012. Generalized bent functions and their relation to Maiorana-McFarland class. Artikkel, pages 1217-1220. In:
    • Caire, Giuseppe; Effros, Michelle; Loeliger, Hans-Andrea; Vardy, Alexander. 2012. Proceedings of 2012 IEEE International Symposium on Information Theory. IEEE conference proceedings. 3175 pages. ISBN: 978-1-4673-2578-3.
  • Gong, Guang; Helleseth, Tor; Hu, Honggang; Li, Chunlei. 2012. New Three-Valued Walsh Transforms from Decimations of Helleseth-Gong Sequences. Kapittel, pages 327-337. In:
    • Helleseth, Tor; Jedwab, Jonathan. 2012. Sequences and Their Applications - SETA 2012 7th International Conference Waterloo, ON, Canada, June 2012 Proceedings. Springer. 337 pages. ISBN: 978-3-642-30614-3.
  • Li, Chunlei; Helleseth, Tor. 2012. New nonbinary sequence families with low correlation and large linear span. Artikkel, pages 1411-1415. In:
    • Caire, Giuseppe; Effros, Michelle; Loeliger, Hans-Andrea; Vardy, Alexander. 2012. Proceedings of 2012 IEEE International Symposium on Information Theory. IEEE conference proceedings. 3175 pages. ISBN: 978-1-4673-2578-3.
  • Li, Nian; Tang, Xiaohu; Helleseth, Tor. 2012. New classes of generalized boolean bent functions over Z4. Artikkel, pages 841-845. In:
    • Caire, Giuseppe; Effros, Michelle; Loeliger, Hans-Andrea; Vardy, Alexander. 2012. Proceedings of 2012 IEEE International Symposium on Information Theory. IEEE conference proceedings. 3175 pages. ISBN: 978-1-4673-2578-3.
  • Luo, Jinquan; Helleseth, Tor. 2012. Binary Niho sequences with four-valued cross correlations. Artikkel, pages 1221-1225. In:
    • Caire, Giuseppe; Effros, Michelle; Loeliger, Hans-Andrea; Vardy, Alexander. 2012. Proceedings of 2012 IEEE International Symposium on Information Theory. IEEE conference proceedings. 3175 pages. ISBN: 978-1-4673-2578-3.
  • Budaghyan, Lilya; Carlet, Claude; Helleseth, Tor. 2011. On bent functions associated to AB functions. Artikkel, pages 150-154. In:
    • Joao, Barros; Max, Costa; Jaime, Portugheis. 2011. Proceedings of IEEE Information Theory Workshop 2011. IEEE Press. 726 pages. ISBN: 978-1-4577-0438-3.
  • Carlet, Claude; Helleseth, Tor; Kholosa, Alexander; Mesnager, Sihem. 2011. On the dual of bent functions with 2^r Niho exponents. Artikkel, pages 703-707. In:
    • Hajek, Bruce; Litsyn, Simon; Ryabko, Boris. 2011. Information Theory Proceedings (ISIT) 2011, IEEE International Symposium on. IEEE Press. 3016 pages. ISBN: 978-1-4577-0596-0.
  • Helleseth, Tor. 2011. Golomb's randomness postulates. Artikkel, pages 516-517. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Gap. Artikkel, pages 508-509. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. De Bruijn sequence. Artikkel, pages 315-316. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Cross-correlation. Artikkel, pages 277-277. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Run. Kapittel, pages 1072-1073. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Maximal-length sequences. Artikkel, pages 763-766. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Autocorrelation. Artikkel, pages 68-68. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Pseudo-noise sequences (PN-sequences). Artikkel, pages 992-992. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor. 2011. Sequences. Artikkel, pages 1185-1188. In:
    • van Tilborg, Henk C. A.; Jajodia, Sushil. 2011. Encyclopedia of Cryptography and Security, 2nd Ed. Springer. 1403 pages. ISBN: 978-1-4419-5905-8.
  • Helleseth, Tor; Rønjom, Sondre. 2011. Simplifying algebraic attacks with univariate analysis. Artikkel. In:
    • Young-Han, Kim. 2011. Proceedings of Information Theory and Applications Workshop (ITA), 2011. IEEE Press. 540 pages. ISBN: 978-1-4577-0360-7.
  • Luo, Jinquan; Helleseth, Tor; Kholosa, Alexander. 2011. Two nonbinary sequences with six-valued cross correlation. Artikkel, pages 44-47. In:
    • Fan, Pingzhi; Yang, Kyeongcheol; Wu, D; Torii, H. 2011. Proceedings of the Fifth International Workshop on Signal Design and Its Applications(IWSDA'11). IEEE Press. 200 pages. ISBN: 978-1-61284-044-4.
  • Hassanzadeh, Mehdi; Helleseth, Tor. 2010. Algebraic attack on the more generalized clock-controlled alternating step generator. Kapitel, pages 1-5. In:
    • Murhty, Chandra. 2010. 2010 International Conference on Signal Processing and Communications (SPCOM), Bangalore, July 18-21, India. IEEE Press. 500 pages. ISBN: 978-1-4244-7137-9.
  • Hassanzadeh, Mehdi; Helleseth, Tor. 2010. Algebraic attack on the alternating step(r,s) generator. Kapitel, pages 2493-2497. In:
    • Gastpar, Michael; Heath, Robert W.; Narayanan, Krishna. 2010. Proceedings of 2010 International Symposium on Information Theory : Trondheim June 21-23, 2010. IEEE Signal Processing Society. 2722 pages. ISBN: 978-1-4244-6960-4.
  • Hassanzadeh, Mehdi; Helleseth, Tor. 2010. Algebraic Attack on the Second class of Modified Alternating k-Generators. Kapitel, pages 12-20. In:
    • Bours, Patrick. 2010. Norwegian Information Security Conference = Norsk Informasjonssikkerhetskonferanse : NISK 2010 . Gjøvik University College, Gjøvik, 23-24 November 2010. Tapir Akademisk Forlag. 159 pages. ISBN: 978-82-519-2705-5.
  • Helleseth, Tor; Kholosa, Alexander. 2010. On Generalized bent functions. Kapitel, pages 1-6. In:
    • Vardy, Alexander. 2010. Information Theory and Applications Workshop (ITA), 2010. IEEE Press. 500 pages. ISBN: 978-1-4244-7012-9.
  • Helleseth, Tor; Kholosa, Alexander. 2010. Sequences, bent functions and Jacobstahl sums. Kapittel, pages 416-429. In:
    • Carlet, Claude; Pott, Alexander. 2010. Sequences and Their Applications - SETA 2010 6th International Conference, Paris, France, September 2010 Proceedings. Springer. 463 pages. ISBN: 978-3-642-15873-5.
  • Helleseth, Tor; Kholosa, Alexander. 2010. New binomial bent functions over the finite fields of odd characteristic. Kapittel, pages 1277-1281. In:
    • Gastpar, Michael; Heath, Robert W.; Narayanan, Krishna. 2010. Proceedings of 2010 International Symposium on Information Theory : Trondheim June 21-23, 2010. IEEE Signal Processing Society. 2722 pages. ISBN: 978-1-4244-6960-4.
  • Bracken, Carl; Helleseth, Tor. 2009. Triple-Error-Correcting BCH-Like Codes. Kapitel, pages 1723-1725. In:
    • Calderbank, Robert; Chung, Habong; Orlitsky, Alon. 2009. 2009 IEEE International Symposium on Information Theory. IEEE Press. 2896 pages. ISBN: 978-1-4244-4313-0.
  • Garg, Gagan; Helleseth, Tor; Kumar, Vijay. 2009. Recent Advances in Low-Correlation Sequences. Kapittel 3, pages 63-92. In:
    • Tarokh, Vahid. 2009. New Directions in Wireless Communications Research. Springer Science+Business Media B.V.. 469 pages. ISBN: 978-1-4419-0672-4.
  • Helleseth, Tor. 2009. Cross-correlation of M-sequences, Exponential Sums and Dickson Polynomials. Kapitel, pages 1-1. In:
    • Fan, Pingzhi; Kojima, Tetsuya; Song, Hong-yeop; Suehiro, Naoki. 2009. Proceedings of the Fourth International Workshop on Signal Design and Its Applications in Communications (IWSDA'09). IEEE Press. 180 pages. ISBN: 978-1-4244-4378-9.
  • Helleseth, Tor; Hojsik, Michal; Rønjom, Sondre. 2009. Algebraic Attacks on Filter and Combiner Generator. Kapittel, pages 39-48. In:
    • Preneel, Bart; Dodunekov, Stefan; Rijmen, Vincent; Nikova, Svetla. 2009. Enhancing Cryptographic Primitives with Techniques from Error Correcting Codes. IOS Press. 273 pages. ISBN: 978-1-60750-002-5.
  • Helleseth, Tor; Kløve, Torleiv. 2009. Algebraic Coding Theory. kapittel, pages 80-94. In:
    • Wah, Benjamin. 2009. Encyclopedia of Computer Science and Engineering. John Wiley & Sons. 3123 pages. ISBN: 978-0-471-38393-2.
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2008. Divisibility properties of Kloosterman sums over finite fields of characteristic two. Kapitel, pages 2608-2612. In:
    • Bølcskei, Helmut; Koetter, Ralf; Kramer, Gerhard. 2008. 2008 International Symposium on Information Theory. IEEE Press. 2776 pages. ISBN: 978-1-4244-2257-9.
  • Hassanzadeh, Mehdi; Salehani, Y. E.; Abyaneh, M.R.S.; Parker, Matthew Geoffrey; Helleseth, Tor. 2008. Differential distinguishing attack on the Shannon stream cipher based on fault analysis. Kapitel, pages 671-676. In:
    • Kamarei, Mahmoud. 2008. Proceedings of International Symposium of Telecommunications (IST 2008). IEEE Communications Society. 1000 pages. ISBN: 1424427509.
  • Helleseth, Tor; Kholosha, Alexander; Johansen, Aina. 2008. m-Sequences of different lengths with four-valued cross correlation. Kapitel, pages 2598-2602. In:
    • Bølcskei, Helmut; Koetter, Ralf; Kramer, Gerhard. 2008. 2008 International Symposium on Information Theory. IEEE Press. 2776 pages. ISBN: 978-1-4244-2257-9.
  • Helleseth, Tor; Kyureghyan, Gohar; Ness, Geir Jarle; Pott, Alexander. 2008. On a family of perfect nonlinear polynomials. Kapitel, pages 126-139. In:
    • Preneel, Bart; Logachev, O.A. 2008. Boolean Functions in Cryptology and Information Security. IOS Press. 356 pages. ISBN: 978-1-58603-878-6.
  • Johansen, Aina; Helleseth, Tor. 2008. Crosscorrelation of m-sequences with decimation d = (p^l + 1)/(p^k + 1). Kapitel, pages 1570-1574. In:
    • Yamamoto, Hirosuke. 2008. Proceedings of the 2008 International Symposium on Information Theory and its Applications (ISITA2008). IEEE Press. 1000 pages. ISBN: 9781424420698.
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2007. On binary primitive BCH codes with minimum distance 8 and exponential sums. Kapitel, pages 1976-1980. In:
    • Goldsmith, Andrea; Medard, Muriel; Shokrollahi, Amin; Zamir, Ram. 2007. 2007 IEEE International Symposium on Information Theory, 24-29 June 2007,. IEEE Press. 2975 pages. ISBN: 1-4244-1429-6.
  • Bassalygo, Leonid; Dodunekov, Stefan; Helleseth, Tor; Zinoviev, Victor. 2006. On a new q-ary combinatorial analog of the Grey-Rankin bound and codes meeting this bound. kapittel, pages 278-282. In:
    • Roth, Ron; Weinberger, Marcelo. 2006. 2006 IEEE Information Theory Workshop. IEEE Press. 351 pages. ISBN: 1-4244-0036-8.
  • Helleseth, Tor. 2006. Sequence correlation. IV-7, pages 313-316. In:
    • Colbourne, Charles; Dinitz, Jeffrey. 2006. Handbook of combinatorial designs. CRC Press. 1016 pages. ISBN: 1-58488-506-8.
  • Helleseth, Tor. 2006. Optical orthogonal codes. IV-9, pages 321-324. In:
    • Colbourne, Charles; Dinitz, Jeffrey. 2006. Handbook of combinatorial designs. CRC Press. 1016 pages. ISBN: 1-58488-506-8.
  • Helleseth, Tor; Kløve, Torleiv; Levenshtein, Vladimir. 2006. A bound for codes with given minimum and maximum distance. Kapittel, pages 292-296. In:
    • O'Sullivan, Joseph A.; Anderson, John. 2006. IEEE 2006 International Symposium on Information Theory. IEEE Press. 2123 pages. ISBN: 1-4244-0504-1.
  • Ness, Geir Jarle; Helleseth, Tor. 2006. Three-Valued Crosscorrelation Between m-Sequences of Different Lengths. Kapittel, pages 1653-1657. In:
    • O'Sullivan, Joseph A.; Anderson, John. 2006. IEEE 2006 International Symposium on Information Theory. IEEE Press. 2123 pages. ISBN: 1-4244-0504-1.
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2005. Coset distribution of triple-error-correcting binary primitive BCH codes. kapittel, pages 1972-1976. In:
    • Schlegel, Christian; Hanley, Stephen. 2005. Proceedings 2005 International Symposium on Information Theory. IEEE Press. 491 pages. ISBN: 0-7803-9151-9.
  • Helleseth, Tor. 2005. Golomb's randomness postulates. artikkel, pages 242-242. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Maximum-length sequence. artikkel, pages 372-375. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Auto-correlation. artikkel, pages 27-27. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Sequences. artikkel, pages 560-563. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Pseudo-noise (PN) sequence. artikkel, pages 483-483. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Pseudo-random sequence. artikkel, pages 242-242. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Run. key-word, pages 539-539. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. De Bruijn sequence. artikkel, pages 138-140. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Gap. key-word, pages 239-239. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor. 2005. Cross-correlation. artikkel, pages 113-113. In:
    • Van tilborg, Henk. 2005. Encyclopedia of Cryptography and Security. Springer. 683 pages. ISBN: 0-387-23473-X.
  • Helleseth, Tor; Kholosa, Oleksandr. 2005. New monomial bent functions over the finite fields of odd characteristic. Kapittel, pages 72-76. In:
    • Dinneen, Michael j. 2005. Proceedings of the 2005 IEEE Information Theory Workshop on Coding and Complexity. IEEE Press. 281 pages. ISBN: 078039481X.
  • Helleseth, Tor; Kholosa, Oleksandr; Ness, Geir Jarle. 2005. On the correlation distribution of the Coulter-Matthews decimation. Kapittel, pages 190-196. In:
    • Dodunekov, Stefan. 2005. Proceedings Optimal Codes and Related Topics. 303 pages. ISBN: 954-8986-18-3.
  • Molland, Håvard; Helleseth, Tor. 2005. A linear weakness in the Klimov-Shamir T-function. kapittel, pages 1106-1110. In:
    • Schlegel, Christian; Hanley, Stephen. 2005. Proceedings 2005 International Symposium on Information Theory. IEEE Press. 491 pages. ISBN: 0-7803-9151-9.
  • Charpin, Pascale; Helleseth, Tor; Zinoviev, Victor. 2004. On binay BCH codes with minimal distance 8 and Kloosterman sums. Abstract, pages 90-94. In:
    • Manev, Nickolai. 2004. Algebraic and Combinatorial Coding Theory, Proceedings Ninth International Workshop, June 19-25, 2004, Kranevo, Bulgaria. 403 pages. ISBN: 954-8986-14-0.
  • Dodunekov, Stefan; Helleseth, Tor; Zinoviev, Victor. 2004. On q-ary Grey-Rankin bound and codes meeting this bound. Abstract, pages 528-528. In:
    • Kschschang, Frank; Tse, David. 2004. Proceedings 2004 IEEE International Symposium on Information Theory. IEEE Computer Society. 565 pages. ISBN: 0-7803-8280-3.
  • Helleseth, Tor; Lahtonen, Jyrki; Rosendahl, Petri. 2004. On certain equations over finite fields and cross-correlation of m-sequences. kapitel, pages 169-176. In:
    • Feng, Keqin; Niederreiter, Harald; Xing, Chaoping. 2004. Coding, Cryptography and Combinatorics. Birkhäuser Verlag. 405 pages. ISBN: 3-7643-2429-5.
  • Helleseth, Tor; Mathiassen, John Erik; Maas, Martijn; Seegers, Toon. 2004. Linear complexity over F_p of Sidelnikov sequences. Abstract, pages 122-122. In:
    • Kschschang, Frank; Tse, David. 2004. Proceedings 2004 IEEE International Symposium on Information Theory. IEEE Computer Society. 565 pages. ISBN: 0-7803-8280-3.
  • Kim, Y.s.; Jang, J.w.; No, Jong-seon; Helleseth, Tor. 2004. New p-ary bent sequences. Abstract, pages 498-498. In:
    • Kschschang, Frank; Tse, David. 2004. Proceedings 2004 IEEE International Symposium on Information Theory. IEEE Computer Society. 565 pages. ISBN: 0-7803-8280-3.
  • Helleseth, Tor. 2001. On the crosscorrelation of m-sequences and related sequences with ideal autocorrelation. 34-45. In:
    • Helleseth, Tor; Kumar, Vijay; Yang, Kyeongcheol. 2001. Sequences and their applications-SETA'01 : Proceedings of SETA'01. Springer. ISBN: 1-85233-529-7.
  • Helleseth, Tor; Yang, K. 2001. On binary sequences of period p^m-1 with optimal autocorrelation. 209-217. In:
    • Helleseth, Tor; Kumar, Vijay; Ynag, Kyeongcheol. 2001. Sequences and their applications-SETA'01: Proceedings of SETA'01. Springer. ISBN: 1-85233-529-7.

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