1. The need for hydrogen-based energy technologies in the 21st century;Keller,2012
2. IPCC (Intergovernmental Panel on Climate Change) Report: “Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the IPCC. In: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K.B., Tignor, M., Miller, H.L. (Eds.). Cambridge University Press, Cambridge, U.K., p. 996.
3. “America’s Climate Choices, Panel on Advancing the Science of Climate Change”, 2010. National Research Council, ISBN: 0-309-14589-9.
4. Hydrogen conversion technologies and automotive applications;Klebanoff,2012
5. Health effects of diesel exhaust emissions;Sydbom;Eur. Respir. J.,2001