Martin Hell, Thomas Johansson. Cryptanalysis of Achterbahn-Version 2. In Eli Biham, Amr M. Youssef, editors, Selected Areas in Cryptography, 13th International Workshop, SAC 2006, Montreal, Canada, August 17-18, 2006 Revised Selected Papers. Volume 4356 of Lecture Notes in Computer Science, pages 45-55, Springer, 2006. [doi]
Abstract is missing.