1. Baruch, J.: Information system applications. Ann. Rev. of Information Sci. and Tech. C. A. Cuadra (ed.), v. 1, New York, 1966, p. 255.
2. Davis, R. M.: Man-machine communication. Ann. Rev. of Information Sci. and Tech. C. A. Cuadra (ed.), v. 1, New York, 1966, p. 221.
3. Information system applications in medicine;Levy,1968
4. Information system applications;Spring,1967
5. Application of computer for hospital usage;Vallbona;J. Chron. Dis.,1966