共 7 条
[2]
AKIN JS, 1985, DEMAND PRIMARY HLTH
[3]
Domencich T., 1975, URBAN TRAVEL DEMAND, P155
[5]
HAUSMAN J, 1978, ECONOMETRICA, V46, P4403
[6]
Maddala GS., 1983, LTD DEPENDENT QUALIT, DOI [10.1017/CBO9780511810176, DOI 10.1017/CBO9780511810176]