1. A call for action - The Pepper Commission, final report, September 1990;U.S. Bipartéan Commission on Comprehensive Health Care,1990
2. Causes of differences in utilization of health services;Kamper Joergensen;Scandinavian Journal of Social Medicine,1984
3. International health spending and utilization trends;Schieber;Health Affairs,1988
4. International differences in medical care practices;McPherson,1989
5. Budgetary incentives for the appropriate use of medical technology;Neuhauser,1984