共 50 条
[2]
Angrist J.D., 1991, NBER WORKING PAPER
[3]
Angrist JD, 2009, MOSTLY HARMLESS ECONOMETRICS: AN EMPIRICISTS COMPANION, P1
[4]
[Anonymous], 2005, STAT WORLDS CHILDR 2
[5]
[Anonymous], 2004, EC J, DOI DOI 10.1111/J.1532-5415.2004.52504.X
[8]
Clark A., 2007, IZA DISCUSSION PAPER, P1