Uriel Feige, Adi Shamir. Zero Knowledge Proofs of Knowledge in Two Rounds. In Gilles Brassard, editor, Advances in Cryptology - CRYPTO 89, 9th Annual International Cryptology Conference, Santa Barbara, California, USA, August 20-24, 1989, Proceedings. Volume 435 of Lecture Notes in Computer Science, pages 526-544, Springer, 1989. [doi]
Abstract is missing.