1. Newell A et al. (1963) GPS a program that simulates human thought. In: Feigenbaum EA, Feldman JA (eds) Computers and the thought. McGraw-Hill, New York
2. Shortliffe EH (1976) Computer-based medical consultation. MYCIN. Elsevier, New York Oxford Amsterdam
3. Lindsay RK, Buchanan BG, Feigenbaum EA, Lederberg J (1980) Applications of artificial intelligence for organic chemistry — the dendral project. McGraw-Hill, New York
4. Shannon RE, Mayer R, Adelsberger HH (1985) Simulation 44:275
5. Hansen JV, Messier WF (1982) Int J Comput Inf Sci 11:357