1. (a)The Hydrogen Economy: NRC and NAE; The National Academies Press: Washington, DC, 2004.
2. (b)The Hydrogen Initiative;http://www.aps.org/public_affairs/index.cfm; The American Physical Society, 2004.
3. (a) Gutowska, A.; Li, L.; Shin, Y.; Wang, C.; Li, X. S.; Linehan, J. C.; Smith, R. S.; Kay, B. D.; Schmid, B.; Shaw, W.; Gutowski, M.; Autrey, T.Angew Chem.2005, accepted for publication.