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2) Bradley M., Realism and Adaptation in Designing Hypothetical Travel Choice Concepts, Journal of Transport Economics and Policy, Vol.22, No.1, pp.121-137, 1988.
3) Burnett P. and Hanson S., The Analysis of Travel as an Example of Complex Human Behaviuor in Spatially-Constrained Situations: Definition and Measurement Issues, Transportation Research, Vol.16A, No.2, pp.87-102
4) Hensher, D. A., Barnard, P. O. and Truong, T. P., The Role of SP Methods in Studies of Travel Choice, Journal of Transport Economics and Policy, Vol.22, No.1, pp.45-58, 1988.
5) Jones P. M., Experience with Household Activity-Travel Simulator (HATS), TRR 765, pp.6-12, 1981.