1. DoE, Energy storage research and development, Annual progress report FY2009 2010, US Department of Energy (DOE), Energy Efficiency and Renewable Energy (EERE) Washington DC, USA.
2. Energy: The Solar Hydrogen Alternative;Bockris,1975
3. The Hydrogen Energy System, in opening address;Veziroglu,1974
4. IEA, 2006. Prospects for hydrogen and fuel cells; IEA Energy Technology Analysis Series. International Enegry Agency: Paris.
5. HyWays: 2007 The European Hydrogen Roadmap, EU Integrated Research Project. Viewed on; Available from: http://www.hyways.de/index.htmlS.