Carsten Lutz, Dirk Walther, Frank Wolter. Conservative Extensions in Expressive Description Logics. In Manuela M. Veloso, editor, IJCAI 2007, Proceedings of the 20th International Joint Conference on Artificial Intelligence, Hyderabad, India, January 6-12, 2007. pages 453-458, 2007. [doi]
Abstract is missing.