1. Osborn, L., 2016. History of changes in the earth’s temperature. Current Results: Weather and Science Facts. Retrieved from: http://currentresults.com/Environment-Facts/changes–in-earth-temperature.php. Ozturk, I.,Acaravci, A., 2010. CO2 emissions, energy consumption and economic growth in Turkey. Renew. Sustain. Energy Rev. 14, 3220-32250.
2. United Nations Climate Change Conference. United Nations Framework Convention on Climate Change (UNFCCC), Bella Center in Copenhagen, Denmark, 7-18 December 2009.
3. IPCC guidelines for national greenhouse gas inventories;Intergovernmental Panel on Climate Change (IPCC),2006
4. UK Energy Paper. 2003.Our energy future: creating a low carbon economy
5. Regions for Sustainable Change, 2011: Building a Low Carbon Economy: A Handbook for European Regions.