1. Jones, M. D.Toward a hydrogen economy. Presented at the International Energy Agency Renewables Energy Working Party Seminar, Paris, France,2003.
2. Simbolotti, G.Is hydrogen an energy product. Presented at the International Energy Agency Energy Statistics Working Group Meeting, Paris, France,2004.
3. Biofuels and the environment
4. Lee, D. J.; Lee, D. H.Biohydrogen and hydrogen economy. Presented at the 2006 International Biohydrogen Production Technologies Conference, Harbin, China, Jan 13–15,2006.
5. Lee, D. H.; Hsu, S. H.An economy-wide analysis for hydrogen economy in Taiwan. Presented at the World Hydrogen Technologies Convention 2005, Nanyang University, Singapore, Oct 12–15,2005.