7Fedstein, M. S. Hospital Cost Inflation : A Study of Nonprofit Price Dynamics. American Eeonoie Review,vol 60( 1971 ) :853-872.
8Fuchs,V. R. and Kramer,M. J. Determinants of Expenditures for Physicians' Service in the United States: 1948 - 1968. Occasional Paper No. 117 (1972). National Bureau of Economic Research New York.
9Wedig, G. J. Health Status and the Demand foy Health, Journal of Health Economics,vol 7(1988) :151 - 163.
10New House,J. P. and the Insurance Experiment Group. Free for AID Lessons from the Health Insurance Experiment Harvard University Press,Cambridge 1993.