共 35 条
[1]
Aspe P., 1993, EC TRANSFORMATION ME
[5]
BORJAS GJ, 1992, IMMIGRATION WORK FOR
[6]
BOUND J, 1992, AM ECON REV, V82, P371
[7]
COHEN A, 1989, THESIS U CALIFORNIA
[10]
Davidson R., 1993, ESTIMATION INFERENCE, DOI DOI 10.1017/S0266466600009452