1. IEA (2008) World energy outlook 2008.
http://www.iea.org/textbase/nppdf/free/2008/weo2008.pdf
. Accessed 30 Mar 2011
2. EIA (2010) Table 8: electricity supply, disposition, prices, and emissions. Annual energy outlook 2011.
http://www.eia.doe.gov/forecasts/aeo/excel/aeotab_8.xls
. Accessed 16 Mar 2011
3. EIA (2010) Table 46: transportation sector energy use by fuel type within mode. Annual energy outlook 2011.
http://www.eia.gov/oiaf/aeo/supplement/suptab_46.xls
. Accessed 24 Apr 2011
4. Sovacool B, Sovacool K (2009) Identifying future electricity–water tradeoffs in the United States. Energy Policy 37(7):2763–2773
5. Wang F, Yin H, Li S (2010) China’s renewable energy policy: commitments and challenges. Energy Policy 38(4):1872–1878