Wesley W. Chu, Guogen Zhang. Associations and Roles in Object-Oriented Modeling. In David W. Embley, Robert C. Goldstein, editors, Conceptual Modeling - ER 97, 16th International Conference on Conceptual Modeling, Los Angeles, California, USA, November 3-5, 1997, Proceedings. Volume 1331 of Lecture Notes in Computer Science, pages 257-270, Springer, 1997. [doi]
Abstract is missing.