共 6 条
[2]
CIGNO A, 2001, 131 WORLD BANK HUM D
[3]
CIGNO A, 2001, PACIFIC EC REV, V7, P1
[4]
Maddala G. S., 1993, Limited Dependent and Qualitative Variables in Econometrics
[6]
ROSATI FC, 2003, 305 WORLD BANK HUM D