Makoto Nagao, Jun'ichi Tsujii. S-Net: A Foundation for Knowledge Representation Languages. In Bruce G. Buchanan, editor, Proceedings of the Sixth International Joint Conference on Artificial Intelligence, IJCAI 79, Tokyo, Japan, August 20-23, 1979, 2 Volumes. pages 617-624, William Kaufmann, 1979.
Abstract is missing.