Martin Bever, Detlev Ruland. Aggregation and generalization hierarchies in office automation. In Robert B. Allen, editor, Proceedings of the ACM SIGOIS and IEEECS TC-OA 1988 Conference on Office Information Systems, COCS 1988, Palo Alto, California, USA, March 23-25, 1988. pages 250-264, ACM, 1988. [doi]
Abstract is missing.