1. and , Methods for combining modal split and equilibrium assignment models. Tech. Report, Dept. of Operations Research, Southern Methodist University, Dallas, TX, 1979.
2. , and , Studies in the Economics of Transportation. Yale University Press, New Haven, Connecticut (1956).
3. , and , Une méthode d'affectation du trafic. In Beiträge zur Theorie des Verkehrsflusses. W. Leutzback and P. Baron, Eds. Strassenbau and Strassenverkehrstechnik Heft 86, Bonn (1969 ) 198–204.
4. and , Properties of the two mode equilibrium assignment model with flow dependent transit costs. Publication #121, Centre de recherche sur les transports, Université de Montréal (1979).