共 11 条
[2]
Trade,human capital accumulation and growth in an underdeveloped economy. Saarenheimo T. Review of International Economics . 2007
[4]
Urbanismas a Way of life. WIRTI H,LOUIS. A-merican Journal of Sociology . 1989
[8]
Threshold effects in non-dynamic panels: Estimation, testing, and inference[J] . Bruce E. Hansen.  Journal of Econometrics . 1999 (2)
[9]
Patterns of skill premia. Daron Acemoglu. The Review of Economic Studies . 2003