共 33 条
[12]
HAUSMAN J, 1978, ECONOMETRICA, V46, P1252
[14]
Heckman J., 1985, LONGITUDINAL ANAL LA, P156
[15]
HECKMAN JJ, 1989, J AM STAT ASSOC, V84, P862, DOI 10.2307/2290059
[16]
HECKMAN JJ, 1986, ADV ECONOMETRICS, V5, P243
[19]
KORENMAN, 1990, 3473 NAT BUR EC RES
[20]
LALONDE RJ, 1986, AM ECON REV, V76, P604