1. Ross Anderson, Eli Biham and Lars Knudsen: Serpent: A Proposal for the Advanced Encryption Standard. Available from http://www.cl.cam.ac.uk/~rja14/serpent.html
2. Lect Notes Comput Sci;A. Canteaut,2002
3. Don Coppersmith, Shmuel Winograd: “Matrix multiplication via arithmetic progressions”; J. Symbolic Computation (1990), 9, pp. 251–280.
4. Joan Daemen, Vincent Rijmen: AES proposal: Rijndael; The latest revised version of the proposal is available on the internet, http://csrc.nist.gov/encryption/aes/rijndael/Rijndael.pdf
5. Lect Notes Comput Sci;N. Courtois,2001