1. Energy, transport and environment indicators;EUROSTAT,2009
2. Towards energy efficient buildings in Europe;EuroACE,2004
3. The technical potential of solar water heating to reduce fossil fuel use and greenhouse gas emissions in the United States;Denholm,2007
4. CDM potential of solar water heating systems in India;Purohit;Solar Energy,2008
5. Solar water heaters in China: a new day dawning;Han;Energy Policy,2010