1. Lect Notes Comput Sci;K. Aoki,2000
2. E. Biham and A. Shamir, “Differential Cryptanalysis of the Data Encryption Standard,” Springer-Verlag, Berlin, 1993.
3. R. Anderson, E. Biham, and L. R. Knudsen, “SERPENT,” The First Advanced Encryption Standard Candidate Conference, 1998.
http://www.cl.cam.ac.uk/~rja14/serpent.html
4. Lect Notes Comput Sci;J. Daemen,1997
5. J. Daemen and V. Rijmen, “RIJNDAEL,” The First Advanced Encryption Standard Candidate Conference, 1998.
http://www.esat.kuleuven.ac.be/~rijmen/rijndael/