1. http://www.mercedes-benz.com/specials/scr/en/scr_start_e.swf
2. http://www.sae.org/automag/features/futurelook/01–2005/1–113–1–84.pdf
3. http://www.volvo.com/group/scr/en-gb/
4. http://www.renault-trucks.it/
5. C. Winkler, P.Flörchinger, M.D.Patil, J.Gieshoff, P.Spurk and M. Pfeifer, SAE 2003-01-0845 (2003)