1. National Biodiesel Board. Press Release, June 7, 2007. “U.S. Biodiesel Production Capacity.” Available at www.biodiesel.org.
2. ,,,,, & ( 2004). Top value added chemicals from biomass, Volume I: Results of screening for potential candidates from sugars and synthesis gas. United States Department of Energy, Energy Efficiency and Renewable Energy. Available at http://www.osti.gov/bridge/purl.cover.jsp?purl=/15008859-s6ri0N/native/.
3. 1996. Glycerine processing. In (Ed.), Bailey's industrial oil & fat products, Volume 5: Industrial and consumer nonedible products from oils and fats, (pp. 275–308). New York: Wiley.