共 62 条
[3]
Angrist JD, 1998, AM ECON REV, V88, P450
[5]
BECKER GS, 1965, ECON J, V75, P496
[6]
Bellman R., 1957, DYNAMIC PROGRAMMING
[8]
BLANK R, 1994, 4911 NAT BUR EC RES
[9]
BLANK RB, 1990, RES LABOR EC