1. Campbell, S., Jaller, M., Sanchez-Diaz, I., Holguin-Veras, J., Lawson, C., 2012. Comparison between industrial classification systems in freight trip generation modeling. Transportation Research Board 91st Annual Meeting Compendium of Papers.
2. State-of-the art of freight forecast modeling: lessons learned and the road ahead;Chow;Transportation,2010
3. Intelligent freight-transportation systems: assessment and the contribution of operations research;Crainic;Transport. Res. Part C: Emerg. Technol.,2009
4. Federal Highway Administration (FHWA), 2012. 2009 National Household Travel Survey. (26.12.12).
5. Fischer, M.J., Han, M., 2001. National Cooperative Highway Research Program (NCHRP) Synthesis 298. Transportation Research Board, Washington, DC.