1. Lecture Notes in Computer Science;M. Tambe,1996
2. Self, J.: Artificial Intelligence in Education: Towards Computational Mathetics. University of Lancaster, Lancaster, UK, Unpublished draft (May 1995)
3. Cerri, S.A., Loia, V.: A Concurrent, Distributed Architecture for Diagnostic Reasoning. Journal of User Modeling and User Adapted Interaction 7, 69–105 (1997)
4. Kent Dybvig, R.: The Scheme Programming Language; ANSI Scheme. Prentice-Hall, Englewood Cliffs (1996)
5. Queinnec, C.: Les langages LISP. InterEditions, Paris (1994)