Jordi Levy. Decidable and Undecidable Second-Order Unification Problems. In Tobias Nipkow, editor, Rewriting Techniques and Applications, 9th International Conference, RTA-98, Tsukuba, Japan, March 30 - April 1, 1998, Proceedings. Volume 1379 of Lecture Notes in Computer Science, pages 47-60, Springer, 1998. [doi]
Abstract is missing.