G. Wilson, and M. Heywood. IEEE CCECE 2002: IEEE Canadian Conference on
Electrical and Computer Engineering, 2, page 809--814. IEEE Press, (12-15 May 2002)
C. Burgess, and M. Lefley. Machine Learning Applications In Software Engineering:
Series on Software Engineering and Knowledge
Engineering, 16, World Scientific Publishing Co., (May 2005)
R. Schank, and R. Abelson. Thinking: Readings in Cognitive Science, Proceedings of the Fourth International Joint Conference on Artificial Intelligence, page 151-157. Tbilisi, USSR, (1975)
A. Stern, and M. Mateas. the International DiGRA Conference, June 16th - 20th, 2005, Vancouver, British Columbia, Canada (http://www.gamesconference.org/digra2005/overview.php), (2005)