1. Differential cryptanalysis of DES-like cryptosystems;Biham,1991
2. Are big S-boxes best?;Gordon,1982
3. Linear cryptanalysis method for DES cipher;Matsui,1994
4. Enumerating boolean functions of cryptographic significance;Mitchell;J. Cryptology,1990
5. On the construction of highly nonlinear permutations;Nyberg,1992