James A. Larson, P. A. Dwyer. Defining External Schemas for an Entity-Relationship Database. In Carl G. Davis, Sushil Jajodia, Peter A. Ng, Raymond T. Yeh, editors, Proceedings of the 3rd Int. Conf. on Entity-Relationship Approach (ER 83). pages 347-364, North-Holland, 1983. [doi]
Abstract is missing.