| iahe.org | International Association for Hydrogen Energy |
| hydrogenus.com | National Hydrogen Association |
| hydrogen.co.uk | A Hydrogen Powered World |
| hfcletter.com | Hydrogen and Fuel Cell Letter |
| h2fc.com | The Hydrogen and Fuel Cell Investor |
| fuelcells.org | Fuel Cells 2000 |
| energy.gov | The Hydrogen, Fuel Cells & Infrastructure Technologies Program |
| clean-air.org | American Hydrogen Association: ................ A P |
| ch2bc.org | International Clearinghouse for Hydrogen Based Commerce |
| ballard.com | Ballard Power Systems - Home |
| hyweb.de | www.hyweb.de/ |
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