1. Changing nature of physician satisfaction with health maintenance organizations;Schulz;Journal of Family Practice,1997
2. Gatekeeping revisited — protecting patients from overtreatment;Franks;New England Journal of Medicine,1992
3. Variations in resource utilization among medical specialties and systems of care: results from the medical outcomes study;Greenfield;Journal of the American Medical Association,1992
4. Specialists or generalists? On whom should we base the American health care system?;Rosenblatt;Journal of the American Medical Association,1992
5. Choice and opportunity. Primary care. The future,1996