2Green, W.H..Econometric Analysis[M]. Upper Saddle River, N.J.: Prentice Hall, 1997.
3McFadden, D.Conditional Logit Analysis of Qualitative Choice Behavior, in Frontiers in Econometrics, ed [M]. P. Zarembka, New York: Academic Press, 1974.
4Hausman, J.and McFadden, D.Specification Tests for the Multinomial Logit Model[J]. Econometrica, 1984. 52, 5: 1219-1240.
5J. Scott Long and Jeremy Ereese, Regression Models for Categorical Dependent Variables Using Stata, 2nd Edition [M]. US: Stata Press, 2006.
