Specific Human Capital: An Application to Quit Rates and Layoff Rates Donald O. Parsons Journal of Political Economy 1972 80(6), 1120-1143
Time-Series Changes in Personal Income Inequality in the United States from 1939 with Projections to 1985: A Comment Aba Schwartz; Donald O. Parsons Journal of Political Economy 1974 82(5), 1027-1032