共 24 条
[1]
[Anonymous], 2005, 11471 NBER
[2]
[Anonymous], 1986, LTD DEPENDENT QUALIT
[5]
Brainard SL, 1997, AM ECON REV, V87, P520
[7]
[9]
Greene H.W., 2008, ECONOMETRIC ANAL, V6th

