Zurab Khasidashvili. The Longest Perpetual Reductions in Orthogonal Expression Reduction Systems. In Anil Nerode, Yuri Matiyasevich, editors, Logical Foundations of Computer Science, Third International Symposium, LFCS 94, St. Petersburg, Russia, July 11-14, 1994, Proceedings. Volume 813 of Lecture Notes in Computer Science, pages 191-203, Springer, 1994.
Abstract is missing.