The Variable Containment Problem

Stefan Kahrs. The Variable Containment Problem. In Gilles Dowek, Jan Heering, Karl Meinke, Bernhard Möller, editors, Higher-Order Algebra, Logic, and Term Rewriting, Second International Workshop, HOA 95, Paderborn, Germany, September 21-22, 1995, Selected Papers. Volume 1074 of Lecture Notes in Computer Science, pages 109-123, Springer, 1995.