J. Philip Benkard, John N. Seebe. Reflections on grades. In Tom Puckett, Laurie A. Russell, David M. Weintraub, editors, Proceedings of the international conference on APL, APL 1983, Washington, D.C., USA, April 10-13, 1983. pages 251-257, ACM, 1983. [doi]
Abstract is missing.