1. Characterization of crude glycerol from biodiesel production from multiple feedstocks;Thompson;Appl Eng Agric,2006
2. Retrieved from World Wide Web http://biodiesel.org/resources/faqs/ on December 17, 2006.
3. Pachauri N, He B. 2006. Value-added utilization of crude glycerol from biodiesel production: a survey of current research. American Society of Agricultural and Biological Engineers Annual Meeting, Portland, OR.
4. Hydrogen futures: toward a sustainable energy system;Dunn;Int J Hydrogen Energy,2002
5. A figure of merit assessment of the routes to hydrogen;Ewan;Int J Hydrogen Energy,2005