共 16 条
[1]
ALTONJI JG, 1982, REV EC STUDIES, V49, P738
[5]
DIAMOND PA, 1965, AM ECON REV, V55, P1127
[6]
FARMER REA, 1985, UNPUB REV EC STUDIES
[7]
GROSSMAN SJ, 1981, AM ECON REV, V71, P301
[8]
HAM JC, 1983, TESTING ABSENCE CONS