1. International wind energy development;BTM Consult,1995
2. Gridded population of the world;CIESIN;David Simonett Center for Space Studies at University of Santa Barbara, California, NCGIA Technical Report TR-95-6,1997
3. Photovoltaic power systems in selected IEA member countries;IEA;Report Int. Energy Agency PV Power Systems Programme Ex.Co./Task 1, 1997:1,1997
4. Climate Change 1995: Impacts, adaptation and mitigation of climate change: Scientific-technical analysis;IPCC,1996
5. Fundamentals of energy storage;Jensen,1984