David A. Naumann. Observational Purity and Encapsulation. In Maura Cerioli, editor, Fundamental Approaches to Software Engineering, 8th International Conference, FASE 2005, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2005, Edinburgh, UK, April 4-8, 2005, Proceedings. Volume 3442 of Lecture Notes in Computer Science, pages 190-204, Springer, 2005. [doi]
Abstract is missing.