1. Environmental, economic and energetic costs and benefits of biodiesel and ethanol biofuels;Hill;Proceedings of the National Academy of Science,2006
2. EEB – European Biodiesel Board. Available at: www.ebb-eu.org, (accessed 24.03.12).
3. Low-pressure hydrogenolysis of glycerol to propylene glycol;Dasari;Applied Catalysis A-General,2005
4. Pyrolysis of glycerol over activated carbons for syngas production;Fernadez;Journal of Analytical Applied Pyrolysis,2009
5. N. Pachauri, B. He, Value-added utilization of crude glycerol from biodiesel, production: a survey of current research activities. An ASABE Meeting Presentation 2000. 066223, Protland, Oregon 9–12 July 2006.