1. Effectiveness and Efficiency: Random Reflections on Health Services;Cochrane,1972
2. Commitment to Welfare;Titmuss,1968
3. The inverse care law;Tudor Hart;Lancet,1971
4. An assault on all custom;Tudor Hart;Int. J. Hlth Serv.,1973
5. Socioeconomic status and use of physician services: a reconsideration;Bice;Med. Care,1972