Finite fields with applications to coding theory, cryptography and related areas : proceedings of the Sixth International Conference on Finite Fields and Applications, held at Oaxaca, México, May 21-25, 2001 - International Conference on Finite Fields and Applications; Mullen, Gary L., 1947; Stichtenoth, H. (Henning); Tapia-Recillas, Horacio (Springer, 2002)