1. International Energy Outlook;Energy Information Administration, Department of Energy,2009
2. Advanced vehicles: Costs, energy use, and macroeconomic impacts
3. Climate Analysis Indicators Tool (CAIT) Version 7.0;World Resources Institute,2010
4. 2007 Integrated Energy Policy Report;California Energy Commission,2007
5. 2011–2012 Investment Plan for the Alternative Fuel & Vehicle Technology Program;California Energy Commission,2011