1. The economics of discrimination;Becker,1957
2. Income from independent professional practice;Friedman,1954
3. Analysis of the educational personnel system;Greenberg;Rand Reports R-1071-HEW and R-1270-HEW,1973
4. Levin, H.M., undated, Recruiting teachers for large city school, mimeo.
5. Hedonic prices and implicit markets: Product differentiation in pure competition;Rosen;Journal of Political Economy,1974