1. Modeling the demand for freight transport: new approach;Abdelwahab;Journal of Transport Economics and Policy,1992
2. Chiang, Y. S., Roberts, P. O., Ben-Akiva, M. E., 1981. Development of a policy sensitive model for forecasting freight demand: final report. Prepared for the US Department of Transportation, Report No. DOT-P-30-81-04, Washington, DC.
3. A derived demand function for freight transportation;Friedlaender;Review of Economics and Statistics,1980
4. A review of new demand elasticities with special reference to short and long run effects of price changes;Goodwin;Journal of Transport Economics and Policy,1992
5. Goodwin, P.B., Oum, T.H., Waters II, W.G., Yong, J.S., (1991) An annotated bibliography on demand elasticities. Working Paper 682, Transport Studies Unit, University of Oxford, Oxford.