1. Bayrak, A. E., Ren, Y. and Papalambros, P. Y. (2013). Design of hybrid-electric vehicle architectures using auto-generation of feasible driving modes. ASME 2013 Int. Design Engineering Technical Conferences and Computers and Information in Engineering Conf., V001T01A005.
2. Grewe, T. M., Conlon, B. M. and Holmes, A. G. (2007)). Defining the general motors 2-mode hybrid transmission. SAE Paper No. 2007-01-0273.
3. Holmes, A. G. and Schmidt, M. R. (2002)). Hybrid Electric Powertrain including a Two-mode Electrically Variable Transmission. U.S. Patent No. 6,478,705.
4. Jeff, C. (2014)). December 2014 Dashboard, 2014. http:// www.hybridcars.com/december-2013-dashboard
5. Jeff, C., Larry, E. H. and Philippe, C. (2014)). The Alternative Fuels Data Center, Maps and Data: U.S.HEV Sales by Model. http://www.afdc.energy.gov/data/10301