1. Climate Change 2007: Synthesis Report. Contribution of Working Groups I, II and III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change;IPCC,2007
2. Global Warming and Climate Change;Ritter;Chem. Eng. News December,2009
3. World Energy Outlook 2011: Executive Summary;International Energy Agency,2011
4. United Nations, Framework Convention on Climate Change, Draft Decision -/CP.17 Establishment of an Ad Hoc Working Group on the Durban Platform for Enhanced Action. Available at http://unfccc.int/resource/docs/2011/cop17/eng/l01.pdf (accessed February 6, 2012).
5. International Energy Outlook 2011, DOE/EIA-0484;U.S. Energy Information Administration (EIA),2011