1. Sociaal en Cultureel Rapport,1984
2. Competition and market forces: an answer to cost containment in health care?;Enthoven;Acta Hospitalia,1982
3. Patient incentives and hospital insurance;Kaplan;Health Services Research,1971
4. A new type of hospital insurance;Newhouse;The Journal of Risk and Insurance,1971
5. Health delivery reform;Ellwood,1976