1. 1. J. McCarthy, 1960 . Programs with common sense . In Proceedings of the Teddington Conference on the Mechanization of Thought Processes. Her Majesty's Stationery Office. London, England.
2. 2. J. McCarthy, P. J. Hayes., and D. Michie, 1969 . Some philosophical problems from the standpoint of artificial intelligence. In Machine Intelligence 4 . : 463 -502 . American Elsevier. New York, N.Y.
3. Production rules as a representation for a knowledge-based consultation program☆
4. 5. M. Minsky, 1974 . A Framework for Representing Knowledge . MIT Artif.Intell. Memo252 .