1. Prescribed Medicines: Use, Expenditures, and Sources of Payment;Kasper,1982
2. Differences by age groups in health care spending;Fisher;Hlth Care Financ. Rev.,1980
3. The demand for health: a theoretical and empirical investigation;Grossman,1972
4. Demand for Health Insurance: A Theoretical and Empirical Investigation;Phelps,1973
5. Some interim results from a controlled trial of cost-sharing in health insurance;Newhouse;New Engl. J. Med.,1981