Bays, C. W. 1979. Costs comparisons of for-profit and nonprofit hospitals. Social Science and Medicine 13.
Belsley, D.A. E. Kuh and R.E. Welsch. 1980. Regression Diagnostics: Identifying Influential Data and Sources of Collinearity. New York: John Wiley. [OpenAIRE]
Blair, R. P. Ginsburg and R. Vogel. 1975. Blue Cross-Blue Shield administration costs: A study of nonprofit health insurers. Economic Inquiry 13:237-251.
Chow, G. C. 1960. Tests on equality between sets of coefficients in two linear regressions. Econometrics 28(3):59l-605. [OpenAIRE]
Christensen, L. R., D. W. Jorgensen, and L. J. Lau. 1i3. Transcendental logarithmic production functions. Review of Economics and Statistics 55:28-45.
Clarkson, K. 1972. Some implications of property rights in hospital management. Journal of Law and Economics 15:363-384. [OpenAIRE]
Clarkson, K. and 0. Martin, eds. 1980. The economics of nonproprietary organizations. Greenwich, CT: JAI Press.
Denny, M. 1974. The relationship between functional forms for the Production system. Canadian Jourial of Economics VII:2l-31. [OpenAIRE]
Diewert, W. E. 1971. An application of the Shephard duality theorem: A generalized Leontief. Journal of Political Economy 70:481-507. [OpenAIRE]
Feigenbaum, S. 1983. Competition and performance in the nonprofit: The case of medical research charities. Mimeo.