1. Problem-based, self-directed learning;Barrows;Journal of the American Medical Association,1983
2. The clinical reasoning of randomly selected physicians in general medical practice;Barrows;Clinical and Investigative Medicine,1982
3. The method of multiple working hypothesis;Chamberlain;Science,1965
4. from GUIDON to NEOMYCIN and HERACLES in twenty short lessons;Clancey;AI Magazine,1986