David Chaum, Jan-Hendrik Evertse. Crytanalysis of DES with a Reduced Number of Rounds: Sequences of Linear Factors in Block Ciphers. In Hugh C. Williams, editor, Advances in Cryptology - CRYPTO 85, Santa Barbara, California, USA, August 18-22, 1985, Proceedings. Volume 218 of Lecture Notes in Computer Science, pages 192-211, Springer, 1985. [doi]
Abstract is missing.