Bernd Borchert, Lane A. Hemaspaandra, Jörg Rothe. Restrictive Acceptance Suffices for Equivalence Problems. In Gabriel Ciobanu, Gheorghe Paun, editors, Fundamentals of Computation Theory, 12th International Symposium, FCT 99, Iasi, Romania, August 30 - September 3, 1999, Proceedings. Volume 1684 of Lecture Notes in Computer Science, pages 124-135, Springer, 1999. [doi]
Abstract is missing.