1. Hydrogen as a future energy carrier;Zuttel,2008
2. NREL fuel cell and hydrogen technologies program overview;Gearhart,2013
3. Annual progress report: DOE hydrogen and fuel cells program,2013
4. A technological solution for everywhere energy supply with sun, hydrogen and fuel cells;Orecchini;J Fuel Cell Sci Technol,2006
5. Wind to hydrogen in California: case study;Antonia,2012