Victor M. Markowitz, Arie Shoshani. On the Correctness of Representing Extended Entity-Relationship Structures in the Relational Model. In James Clifford, Bruce G. Lindsay, David Maier, editors, Proceedings of the 1989 ACM SIGMOD International Conference on Management of Data, Portland, Oregon, May 31 - June 2, 1989. pages 430-439, ACM Press, 1989. [doi]
Abstract is missing.