1. The Hydrogen Economy: NRC and NAE, The National Academies Press, Washington, DC, 2004;
2. The Hydrogen Initiative; http://www.aps.org/public_affairs/index.cfm;
3. The American Physical Society, 2004;
4. Basic Research Needs for the Hydrogen Economy; http://www.sc.doe.gov/bes/reports/files/NHE_rpt.pdf;
5. Office of Science at the U.S. DOE, 2004.