6Schultz,Theodor e W. Institutions and the Rising Eco- nomic Value of Man[J]. American Journgl of Agricul- tural Economics, 1968,50(5) : 1113- 1122.
7Shioji E. Composition Effect of Migration and Region- al Growth in Japan [J]. Journal of Japanese and Inter- national Economics, 2001,15 ( 1 ) : 29 -49.
8Ritsila J. , M. Ovaskainen. Migration and Regional Centralization of Human Capital [J]. Applied Eco- nomics,2001,33(3) :317-325.
9Matsuyama K. Complementarities and Cumulative Processes in Models of Monopolistic Competition [J].Journal of Economic Literature, 1995 (33) : 701 - 729.
10Birdsall, MN. & J. L. Londonno, "Asset Inequality MattersAn Assessment of the World Bank's Ap proach to Poverty Reduction"[J]. American Economic Review, 1997,87(2) : 32 - 37.