Eric G. Wagner. A Categorical Treatment of Pre- and Post Conditions. In Paul Franchi-Zannettacci, editor, CAAP 86, 11th Colloquium on Trees in Algebra and Programming, Nice, France, March 24-26, 1986, Proceedings. Volume 214 of Lecture Notes in Computer Science, pages 1-5, Springer, 1986.
Abstract is missing.