1. T. Furst, “National Freight Transportation Policy Direction and Why Freight Demand Modeling is Important,” in Freight Demand Modeling, Tools for Public-Sector Decision Making, September 25-27, 2006, Washington D.C., 2006.
2. U.S. Department of Transportation, “Freight Model Improvement Program,” March 2012. [Online]. Available: http://www.freight.dot.gov/fmip/about/index.htm.
3. NCFRP, “National Cooperative Freight Research Program. Report 8: Freight Demand Modeling to Support Public-Sector Decision Making,” Transportation Research Board, Washington D.C., 2010.
4. M. Friedrich, “Qualitätsmanagement für Verkehrsnachfragemodelle (Quality Management for Transport Demand Models),” in Symposium der Deutschen Verkehrswissenschaftlichen Gesellschaft 25./26.03.2010, Berlin, 2010.
5. M. Schaal, “Verkehrsmodellierung (Transport Modelling),” Institut for Informatics. University of Stuttgart, 1996.