1. United Nations Framework Convention on Climate Change (UNFCCC),2015
2. Germany’s Energy Research Plan;Schavan;Science,2010
3. Short term fluctuations of wind and solar power systems;Anvari;New J. Phys.,2016
4. “Hydropower,” in IPCC Special Report on Renewable Energy Sources and Climate Change;Kumar,2011
5. Geothermal Energy;Stober,2013