1. Sustainable energy: choosing among options;Tester,2012
2. Energy statistics 2016;Central Statistics Office,2016
3. Statistical Review of World Energy|Energy economics|BP Global; n.d. 〈http://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html〉 [Accessed 18 August 2017].
4. Global warming projections to 2100 using simple CO2 greenhouse gas modeling and comments on CO2 climate sensitivity factor;Szulejko;Atmos Pollut Res,2016
5. Renewable energy and sustainable development: a crucial review;Dincer;Renew Sustain Energy Rev,2000