N. Kalouptsidis and M. Manolarakis,

*"Sequences of linear feedback shift registers with nonlinear feed-forward logic"*, Proceedings of IEEE, vol. 16, pp. 174-176, 1983.D. Linardatos and N. Kalouptsidis,

*"Synthesis of minimal cost nonlinear feedback shift registers"*, Signal Processing, Vol. 82, pp. 157-176, February 2002.N.Kolokotronis, P.Rizomiliotis and N.Kalouptsidis,

*"Minimum Linear Span Approximation of Binary Sequences"*, IEEE Transactions on Information Theory, Vol. 48, No. 10, pp. 2758-2764, October 2002.N. Kolokotronis and N. Kalouptsidis,

*"On the linear complexity of nonlinearly filtered PN-sequences"*, IEEE Transactions on Information Theory, pp. 3047-3059, no.11, vol. 49, Nov. 2003N. Kolokotronis, G. Gatt, and N. Kalouptsidis,

*"On the generation of sequences simulating higher order white noise for system identification"*,Signal Processing, pp. 833-852, no. 5, vol. 84, May 2004, Elsevier Science.P. Rizomiliotis and N. Kalouptsidis,

*"Results on the nonlinear span of binary sequences"*, IEEE Transactions on Information Theory, pp. 1555-1563, no. 4, vol. 51, Apr. 2005.P. Rizomiliotis, N. Kolokotronis and N. Kalouptsidis,

*"On the quadratic span of binary sequences"*, IEEE Transactions on Information Theory, pp. 1840-1848, no. 5, vol. 51, May 2005.K. Limniotis, N. Kolokotronis and N. Kalouptsidis,

*"On the nonlinear complexity and Lempel?Ziv complexity of finite length sequences"*, IEEE Trans. Inform Theory , Vol. 53, No. 11, pp. 4293-4302, 2007.K. Limniotis, N. Kolokotronis and N. Kalouptsidis,

*"On the linear complexity of sequences obtained by state-space generators"*, IEEE Trans. Inform Theory, Vol. 54, No. 4, pp. 1786-1793, 2008.N. Kolokotronis, K. Limniotis and N. Kalouptsidis,

*"Factorization of determinants over finite fields and applications in stream ciphers"*, CRYPT. AND COM., 2008.K. Xenoulis, and N. Kalouptsidis,

*"Improvement of Gallager Upper Bound and its variations for discrete channels"*, IEEE Trans. Inf. Theory, vol. 55, pp. 4204-4210, Sep. 2009.T. Etzion, N. Kalouptsidis, N. Kolokotronis, K. Limniotis, and K.G. Paterson,

*" Properties of the error linear complexity spectrum", IEEE Trans. on Information Theory, Vol. 55, No. 10, pp. 4681-4686, Oct. 2009.*N. Kolokotronis , K. Limniotis and N. Kalouptsidis,

*" Best affine and quadratic approximations of particular classes of boolean functions", IEEE Trans. on Information Theory, Vol. 55, No. 11, pp. 5211-5222, Nov. 2009.*A. Katsiotis, P. Rizomiliotis, and N. Kalouptsidis,

*"New constructions of high performance low complexity convolutional codes"**, IEEE Trans. on Communications, vol. 58, pp. 1950-1961, July 2010.*K. Xenoulis and N. Kalouptsidis,

*"Achievable rates for nonlinear Volterra channels "*, IEEE Trans. Inf. Theory, vol. 57, pp. 1237–1248, Mar. 2011.A. Katsiotis and N. Kalouptsidis,

*"On (n, n-1) punctured convolutional codes and their trellis modules"*, to appear in IEEE Trans. on Communications, vol. 59, pp. 1213 - 1217, May 2011.K. Xenoulis and N. Kalouptsdis,

*"Tight Performance Bounds for Permutation Invariant Binary Linear Block Codes Over Symmetric Channels,"*IEEE Trans. Inf. Theory, vol. 57, no. 9, pp.6015-6024, Sept. 2011A. Katsiotis, P. Rizomiliotis, and N. Kalouptsidis,

*"Flexible Convolutional Codes: Variable Rate and Complexity,"*IEEE Transactions on Communications, vol. COM - 60, pp. 608 - 613, March 2012.

N.Kolokotronis, P.Rizomiliotis and N.Kalouptsidis,

*"First-Order Optimal Approximation of Binary Sequences"*, in Proc. of SETA 2001, Bergen, Norway.P.Rizomiliotis, N.Kolokotronis and N.Kalouptsidis,

*"Construction of Sequences with four-valued Autocorrelation from GMW Sequences"*, ISIT 2002, Lausanne, Switzerland.N. Kolokotronis, G. Gatt, N. Kalouptsidis,

*"On the generation of sequences simulating higher order white noise for system identification"*, EUSIPCO 2002, Toulouse, France, 3-6 September 2002.D. Linardatos, N. Kalouptsidis,

*"Synthesis of minimal cost nonlinear feedback shift registers"*, EUSIPCO 2002, Toulouse, France, 3-6 September 2002.P. Rizomiliotis, N. Kolokotronis and N. Kalouptsidis,

*"On the quadratic span of binary sequences"*, IEEE International Symposium on Information Theory, Jun. 29- Jul. 4, 2003, Yokohoma, JapanP. Rizomiliotis, and N. Kalouptsidis,

*"Result on the nonlinear span of binary sequences"*, in proceedings of 2004 IEEE International Symposium on Information Theory, pp.124, Jun. 2004.N. Kalouptsidis and K. Limniotis,

*"Nonlinear Span, Minimal Realizations of Sequences Over Finite Fields and De Brujin Generators"*, International Symposium on Information Theory and its Applications, pp. 794-799, Oct. 2004K. Limniotis, N. Kolokotronis and N. Kalouptsidis,

*"New Results on the Linear Complexity of Binary Sequences"*, IEEE International Symposium on Information Theory (ISIT), pp. 2003-2007, July 2006.K. Limniotis, N. Kolokotronis and N. Kalouptsidis,

*"Nonlinear Complexity of Binary Sequences and Connections with Lempel-Ziv Compression"*, in Sequences and Their Applications (SETA), Berlin, Germany: Springer-Verlag, vol. 4086, pp. 168-179, Sept. 2006.N. Kolokotronis, K. Limniotis and N. Kalouptsidis,

*"Lower Bounds on Sequence Complexity via Generalised Vandermonde Determinants"*, in Sequences and Their Applications (SETA), Berlin, Germany: Springer-Verlag, vol. 4086, pp. 271-284, Sept. 2006.N. Kolokotronis, K. Limniotis and N. Kalouptsidis,

*"Improved Bounds on the Linear Complexity of keystreams Obtained by Filter Generators"*, in Inscrypt, 2007.N. Kolokotronis, K. Limniotis and N. Kalouptsidis,

*"Efficient Computation of the Best Quadratic Approximations of Cubic Boolean Functions"*, in IMA, 2007.N. Kolokotronis, K. Limniotis, and N. Kalouptsidis,

*"Best affine approximations of Boolean functions and applications to low order approximations"*, IEEE International Symposium on Information Theory (ISIT), June 2007.T. Etzion, N. Kalouptsidis, N. Kolokotronis, K. Limniotis, and K.G. Paterson,

*"On the error linear complexity profiles of binary syquences of period 2^n"*, IEEE International Symposium on Information Theory (ISIT), July 2008.A. Katsiotis, P. Rizomiliotis, and N. Kalouptsidis,

*"New constructions of low complexity convolutional codes"*, in IEEE Proc. ICC, June 2009.K. Xenoulis and N. Kalouptsidis,

*"On the random coding exponent of nonlinear Gaussian channels"*, in IEEE Proc. ITW workshop, June 2009.K. Limniotis, N. Kolokotronis, and N. Kalouptsidis,

*"Constructing boolean functions in odd number of variables with maximum algebraic immunity"*, in proc. of IEEE International Symposium on Information Theory, pp. 2662–2666, 2011.N. Kalouptsidis and N. Kolokotronis,

*"Fast decoding of regular LDPC codes using greedy approximation algorithms"*, in proc. of IEEE International Symposium on Information Theory, pp. 2011–2015, 2011.K. Xenoulis, N. Kalouptsidis and I. Sason,

*"New achievable rates for nonlinear Volterra Channels via Martingale Inequalities"*, IEEE ISIT 2012, Boston, USA.A. Katsiotis, N. Kalouptsidis, and P. Rizomiliotis,

*"Recursive Flexible Convolutional Encoders for Parallel Concatenation"*, 7th International Symposium on Turbo Codes and Iterative Information Processing (ISTC), Gothenburg, Sweden, August 2012.