1. ANDERSON, J.: Information System in the Hospital Lecture Notes
2. BARNETT, G.O., GREENES, R.A., GROSSMAN, J.H.: Computer Processing of Medical Text Information Meth. Inform. Med. 8 (1969) 177–182
3. BROSS, I.D.J., PRIORE, R.L., SHAPIRO, P.A., STERMOLE, D.E., ANDERSON, B.B.:Feasibility of Automated Information Systems in the Users’ Natural Languages Americ. Scientist 57 (1969) 193–205
4. CHOMSKY, N.: Aspects of the Theory of Syntax Cambridge, Mass.: MIT-Press 1965
5. COLLEGE OF AMERICAN PATHOLOGISTS: Systematized Nomenclature of Medicine. Trial Version Chicago: College of American Pathologists 1975