1. Life-Cycle Cost Analysis Procedures Manual;California Department of Transportation,2007
2. Carnegie Mellon Green Design Institute, 2007. Economic Input–Output Life-Cycle Assessment. US 1997 Industry Benchmark Model. (retrieved 12.12.08).
3. Facanha, C., 2009. Effects of Congestion and Road Level of Service on Vehicle Fuel Economy. 88th Annual Transportation Research Board, Washington, DC.
4. Evaluation of life-cycle air emission factors of freight transportation;Facanha;Environmental Science and Technology,2007
5. Federal Highway Administration, 2003. Economic Analysis Primer. Federal Highway Administration. FHWA IF-03-032, Washington, DC.