1. “Manacled competition”: Market reforms in German health care;Brown;Health Affair,1999
2. Social Security Policies in Industrial Countries;Gorden,1988
3. Harris J: Do crinkly toenails matter? http://www.bmj.com/cgi/eletters/318/7190/1031 (May 12, 1999)
4. Financial incentives for physicians in HMOs;Hillman;N Engl J Med,1987
5. Germany's Health System: One Nation, United With Health Care for All;Knox,1993