1. 2010 http://www.hydrogen.energy.gov/program_records.html
2. http://www.hydrogen.energy.gov/annual_review10_proceedings.html
3. http://www.hydrogen.energy.gov/annual_progress.html
4. 2010 http://www1.eere.energy.gov/hydrogenandfuelcells/fc_wkshp_mar10.html
5. 2010 http://www.hydrogen.energy.gov/pdfs/review10/fc018_james_2010_o_web.pdf