Patricia G. Selinger, Morton M. Astrahan, Donald D. Chamberlin, Raymond A. Lorie, Thomas G. Price. Access Path Selection in a Relational Database Management System. In Philip A. Bernstein, editor, Proceedings of the 1979 ACM SIGMOD International Conference on Management of Data, Boston, Massachusetts, May 30 - June 1. pages 23-34, ACM, 1979. [doi]
Abstract is missing.