1. EIA: World Energy Demand and Economic Outlook: US Energy Administration: independent statistics and analysis (2010)
2. Intergovernmental Panel on Climate Change (IPCC): Special Report on Safegaurding the Ozone Layer and the Global Climate System; Issues Related to Hydroflourocarbons and Perflourocarbons. Cambidge University Press, Cambidge (2006). http://www.wmo.ch
3. Adnot, J.; Lopes, C.; Cauret, L.: Expanding the electricity chain: the provision of active energy services in the peculiar French system. In: Proceedings of the UIE International Conference Electricity for a Sustainable Urban Development, Lisbon (2000)
4. DOE/EIA: Annual Energy Outlook 2007 with Projection to 2030. Energy Information Administration, US Department of Energy, Washington DC. Available at: http://www.eia.doe.gov/oiaf/aeo/ (2007)
5. Mahlia T.M.I., Masjuki H.H., Choudhury I.A.: Development of energy labels for room air conditioner in Malaysia: methodology and results. Energy Convers. Manag. 43(15), 1985–1997 (2002)