1. Aptech Systems (1993) GAUSS: User’s Guide. Aptech Systems.
2. Ben-Akiva, M. and Francois, B. (1983) μ Homogeneous generalized extreme value model. Working paper, Department of Civil Engineering, MIT, Cambridge.
3. Ben-Akiva, M. and Lerman, S. R. (1985) Discrete Choice Analysis: Theory and Application to Travel Demand. The MIT Press, Cambridge.
4. Bierlaire, M. (1995) A Robust Algorithm for the Simultaneous Estimation of Hierarchical Logit Models. Technical Report, Department of mathematics, FUNDP, Namar, Belgium.
5. Bierlaire, M. and Vandevyvere, Y. (1995) HieLoW: the Interactive User’s Guide. Transportation Research Group, FUNDP, Namur.