1. Lecture Notes in Computer Science;N.T. Courtois,2003
2. Mihaljevie, M., Imai, H.: Cryptanalysis of Toyocrypt-HIS stream cipher. IEICE Transactions on Fundamentals E85-A, 66-73 (2002),
http://www.csl.esat.sony.co.jp/atl/papers/IEICEjan02.pdf
3. Babbage, S.: Cryptanalysis of LILI-128. Technical report (January 2001),
http://www.cosic.esat.kuleuven.ac.be/nessie/reports/
4. Lecture Notes in Computer Science;W. Meier,2004
5. Shannon, C.E.: Communication Theory of Secrecy System. Bell System Technical Journal 28, 656–715 (1949),
http://netlab.cs.ucla.edu/wiki/files/shannon1949.pdf