1. New Energy Outlook 2015;[BNEF] – Bloomberg New Energy Finance,2015
2. Fossil and Nuclear Fuels – The Supply Outlook;[EWG] - Energy Watch Group,2013
3. The impact of the financial and economic crisis on global energy investment;[IEA]– International Energy Agency,2009
4. World Energy Outlook;[IEA]– International Energy Agency,2014
5. Global Energy Assessment (GEA);[IIASA] - International Institute for Applied Systems Analysis,2012