1. The hydrogen experiment;Dunn;World Watch,2000
2. Hydrogen Futures: Toward a Sustainable Energy System;Dunn,2001
3. Tomorrow's Energy: Hydrogen, Fuel Cells, and the Prospects for a Cleaner Planet;Hoffmann,2001
4. The ultimate challenge: Building an infrastructure for fuel cell vehicles;Jensen;Environment,1999
5. Powering the Future: The Ballard Fuel Cell and the Race to Change the World;Koppel,1999