1. US Department of Energy—Energy Information Administration. Fuel and kerosene sales 2002, Washington, DC, http://www.eia.doe.gov/pub/oil_gas/petroleum/data_publications/fuel_oil_and_kerosene_sales/current/pdf/table13.pdf.
2. National Biodiesel Board. http://www.biodiesel.org/pdf_files/backgrounder.PDF; 2004.
3. US Department of Energy—Energy Information Administration. Impact of Renewable Fuels Standard/MTBE Provisions of S. 1776, Washington, DC, 2002, http://www.eia.doe.gov/oiaf/servicerpt/mtbe/pdf/sroiaf(2002)06.pdf.
4. BSE and the Beef Tallow Issue. US Potato Board, www.uspotatoes.com/fry2.htm (6 January 2005).
5. Significance of Tallow in the Transmission of BSE. August 2002, www.priondata.org/data/A_tallow.html.