D. Fox, J. L. Kessler. Experiments in software modeling. In American Federation of Information Processing Societies: Proceedings of the AFIPS '67 Fall Joint Computer Conference, November 14-16, 1967, Anaheim, California, USA. Volume 31 of AFIPS Conference Proceedings, pages 429-436, AFIPS / ACM / Thomson Book Company, Washington D.C., 1967. [doi]
Abstract is missing.