1. Aldrich Catalog (1988). Aldrich Chemical Co. Milwaukee, WI.
2. Aldrich Catalog (1989). Aldrich Chemical Co. Milwaukee, WI.
3. ASTM Standard D1983-90 (1995). Standard Test Method for Fatty Acid Composition by Gas-Liquid Chromatography of Methyl Esters. ASTM. West Conshohocken PA.
4. Biodiesel Standard (1994). DIN V51606, Germany.
5. Biodiesel Standard (1999). ASTMPS121, USA.