共 53 条
[1]
Fixed-effects negative binomial regression models
[J].
SOCIOLOGICAL METHODOLOGY 2002, VOL 32,
2002, 32
:247-265
[3]
[Anonymous], 1983, MARKETING SCI
[4]
[Anonymous], J E ASIA SOC TRANSPO
[8]
BORENSTEIN S, 1988, AM ECON REV, V78, P913