Roberto Bruni, Fabio Gadducci, Ugo Montanari. Normal Forms for Partitions and Relations. In José Luiz Fiadeiro, editor, Recent Trends in Algebraic Development Techniques, 13th International Workshop, WADT 98, Lisbon, Portugal, April 2-4, 1998, Selected Papers. Volume 1589 of Lecture Notes in Computer Science, pages 31-47, Springer, 1998.
Abstract is missing.