Enrico Franconi. Collective Entities and Relations in Concept Languages. In Robert M. MacGregor, Deborah L. McGuinness, Eric Mays, Thomas A. Russ, editors, Issues in Description Logics: Users Meet Developers, Boston, MA, USA, October 1992. AAAI Fall Symposium Series, pages 31-35, AAAI Press, 1992.
Abstract is missing.