1. Aptech Systems, 1995. GAUSS applications: constrained maximum likelihood. Aptech Systems, Inc., Maple Valley, WA
2. A heteroscedastic extreme value model of intercity mode choice;Bhat;Transportation Research B,1995
3. Smooth unbiased multivariate probability simulators for maximum likelihood estimation of limited dependent variable models;Börsch-Supan;Journal of Econometrics,1993
4. Chu, C., 1989. A paired combinatorial logit model for travel demand analysis. Proceedings of the Fifth World Conference on Transportation Research, vol. 4, Ventura, CA, pp. 295–309
5. Chu, C., 1981. Structural issues and sources of bias in residential location and travel mode choice models. Unpublished Ph.D. Dissertation. Department of Civil Engineering, Northwestern University, USA