Ken-etsu Fujita, Aleksy Schubert. The Undecidability of Type Related Problems in Type-free Style System F. In Christopher Lynch, editor, Proceedings of the 21st International Conference on Rewriting Techniques and Applications, RTA 2010, July 11-13, 2010, Edinburgh, Scottland, UK. Volume 6 of LIPIcs, pages 103-118, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, 2010. [doi]
Abstract is missing.