Eli Biham, Alex Biryukov, Orr Dunkelman, Eran Richardson, Adi Shamir. Initial Observations on Skipjack: Cryptanalysis of Skipjack-3XOR. In Stafford E. Tavares, Henk Meijer, editors, Selected Areas in Cryptography 98, SAC 98, Kingston, Ontario, Canada, August 17-18, 1998, Proceedings. Volume 1556 of Lecture Notes in Computer Science, pages 362-376, Springer, 1998. [doi]
Abstract is missing.