1. The AHA Guide to the Health Care Field;American Hospital Association,1972
2. Cost Functions of Hospital Diagnostic Centers: A Possible Argument for Diagnostic Centers;Cohen,1973
3. Variations in Cost Among Hospital of Different Sizes;Cohen;Southern Economic Journal,1967
4. Economic Analysis for Health Services Efficiency;Feldstein,1967
5. Hospital Cost Inflation: A Study of Non-profit Price Dynamics;Feldstein;American Economic Review,1971