1. Framework convention on climate change, “Paris agreement,” 21st conference of the parties;UNFCCC- United Nations,2015
2. Ram M., Bogdanov D., Aghahosseini A., Oyewo A.S., Child M., Fell H.-J., Breyer C. Global Energy System based on 100 % Renewable Energy - Power Sector. Study by Lappeenranta University of Technology and Energy Watch Group. Lappeenranta. Berlin. November 2017. Available: https://goo.gl/ghDikW.
3. Solar photovoltaics demand for the global energy transition in the power sector;Breyer;Prog Photovoltaics Res Appl,2018
4. Response to ‘Burden of proof: a comprehensive review of the feasibility of 100% renewable-electricity systems’;Brown;Renew Sustain Energy Rev,2018
5. Renewable energy policy network for the 21st century (REN21) - renewables 2018 global status report, Paris,2018