Olga Stepánková, Petr Stepánek. Stratification of Definite Clause Programs and of General Logic Programs. In Egon Börger, Hans Kleine Büning, Michael M. Richter, editors, CSL 89, 3rd Workshop on Computer Science Logic, Kaiserslautern, Germany, October 2-6, 1989, Proceedings. Volume 440 of Lecture Notes in Computer Science, pages 396-408, Springer, 1989.
Abstract is missing.