1. World Resources Institute, www.wri.org
2. Plotkin SE (2007) Examining fuel economy and carbon standards for light vehicles. Argonne National Laboratory, Washington D.C., USA
3. E. Incerti, A. Walker and J. Purton, "Trends in vehicle body construction and the potential implications for the motor insurance and repair industries", International Body shop Industry Symposium: Montreux, Switzerland, 2005.
4. J. Stans, H. Bos, CO2 reductions from passenger cars, The European Parliament's Committee on the Environment, Public Health and Food Safety, (IP/A/ENVI/FWC/2006-172/Lot 1/C2/SC1), 2007.
5. European Automobile Manufacturers Association. (ACEA), Reducing CO2 emissions from cars towards an integrated approach, 2008.