1. P. H. Winston,Artificial Intelligence (2nd edn), Addison-Wesley, 1984.
2. E. Charniak and D. McDermott,Introduction to Artificial Intelligence, Addison-Wesley, 1985.
3. J. L. Alty, ‘Use of Expert Systems’,CAE Journal, pp. 2–9, February 1985.
4. E. H. Shortliffe,Computer-based medical consultations: MYCIN, Elsevier, 1976.
5. R. Duda, P. Hart, N. Nilsson, ‘Subjective Bayesian methods for rule-based inference systems’,Proceedings of AFIPS Conference, 45, 1075–1082, 1976.