1. The world bank. Fossil fuel energy consumption Data; 2015. Available: http://data.worldbank.org/indicator/EG.USE.COMM.FO.ZS/countries.
2. Life cycle impact assessment of fossil fuels;Dincă;Nat Gas,2010
3. Depletion of fossil fuels and anthropogenic climate change—A review;Höök;Energy Policy,2013
4. European Commission. European Climate Change Programme. Available: http://ec.europa.eu/clima/policies/eccp/index_en.htm.
5. European Comission. 2020 climate & energy package. Available: http://ec.europa.eu/clima/policies/strategies/2020/index_en.htm.