共 40 条
[2]
Angrist JD, 2009, MOSTLY HARMLESS ECONOMETRICS: AN EMPIRICISTS COMPANION, P1
[3]
[Anonymous], [No title captured]
[4]
[Anonymous], [No title captured]
[5]
[Anonymous], [No title captured]
[8]
BAILEY MJ, 1963, J AM STAT ASSOC, V58, P933
[9]
BAUMOL WJ, 1986, AM ECON REV, V76, P10