Corrado Böhm, Mariangiola Dezani-Ciancaglini. Lambda-terms as total or partial functions on normal forms. In Corrado Böhm, editor, Lambda-Calculus and Computer Science Theory, Proceedings of the Symposium Held in Rome, March 25-27, 1975. Volume 37 of Lecture Notes in Computer Science, pages 96-121, Springer, 1975.
Abstract is missing.