1. S. Nirenburg and V. Raskin, Ontological Semantics, MIT Press, Cambridge, MA (2004).
2. I. Bratko, Prolog Programming for Artificial Intelligence, Harlow, England; Addison Wesley, New York (2001).
3. M. Gardner, “Mathematical games — The fantastic combinations of John Conway’s new solitaire game ‘life’,” Scientific American, Vol. 223, 120–123 (1970).
4. G. F. Luger, Artificial Intelligence: Structures and Strategies for Complex Problem Solving [Russian translation], 4th Edition, Williams Publishing House, Moscow (2003).
5. S. J. Gould, Full House: The Spread of Excellence from Plato to Darwin, Harmony Books, New York (1996).