Bernhard Heinemann. Observational Effort and Formally Open Mappings. In Hiroakira Ono, Makoto Kanazawa, Ruy J. G. B. de Queiroz, editors, Logic, Language, Information and Computation, 16th International Workshop, WoLLIC 2009, Tokyo, Japan, June 21-24, 2009. Proceedings. Volume 5514 of Lecture Notes in Computer Science, pages 197-208, Springer, 2009. [doi]
Abstract is missing.