Manfred Schmidt-Schauß, Klaus U. Schulz. Solvability of Context Equations with Two Context Variables is Decidable. In Harald Ganzinger, editor, Automated Deduction - CADE-16, 16th International Conference on Automated Deduction, Trento, Italy, July 7-10, 1999, Proceedings. Volume 1632 of Lecture Notes in Computer Science, pages 67-81, Springer, 1999. [doi]
Abstract is missing.