Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	NEWELL, A., TONGE, F. M., FEIGENBAUM, E. A., GREEN, B. F., AND MEALY, G. H. Information Processing Language--V Manual (2nd ed.). Prentice-Hall, Englewood Cliffs, N.J., 1964.
	2	KLEENE, S. Introduction to Metamathematics. Van Nostrand, Princeton, N.J., 1952.
	3	GREEN, C. C., AND RAPHAEL, B. Research on intelligent question-answering system. Stanford Research Inst., Menlo Park, Calif., May 1967.
	4	James R. Slagle, Experiments with a deductive question-answering program, Communications of the ACM, v.8 n.12, p.792-798, Dec. 1965  [doi>10.1145/365691.365960]
	5	ERNST, G. W., AND NEWELL, A. Generality and GPS. Center for Study of Information Processing, Carnegie-Mellon U., Pittsburgh, Pa., 1967.
	6	NEWELL, A., SHAW, Z. C., AND SIMON, H.A. Report on a general problem solving program for a computer. Information Processing: Proc. Int. Conf. on Inf. Proc., UNESCO, Paris, 1960, pp. 256-264.
	7	Allen Newell , J. C. Shaw , H. A. Simon, Empirical explorations with the logic theory machine: a case study in heuristics, Computers & thought, MIT Press, Cambridge, MA, 1995
	8	WHITEHEAD, A. N., AND RUSSELL, B. Principia Mathematica, Vol. 1 (2nd ed.), Cambridge U. Press, Cambridge, England, 1925.
	9	WANG, H. Toward mechanical mathematics. IBM J. Res. Develop. ~ (Jan. 1960), 2-22.

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