1. Fed. Regist. 47(186), 42123 (Sept. 24, 1982).
2. Official Methods of Analysis of the Association of Official Analytical Chemists, 14th Edition, Association of Official Analytical Chemists, Arlington, VA, 1984.
3. Riv. Ital. Sostanze Grasse 60:217 (1983).
4. Standard Methods for the Analysis of Oils, Fats and Soaps, International Union of Pure and Applied Chemistry, Applied Chemistry Division, Commission on Oils, Fats and Derivatives, 6th Edition, Pergamon Press, Elmsford, NY, 1979.
5. Comm. Tecnica Govern. “Norme Italiane per il controllo dei grassi e dei derivati (NGD).” Staz. Sper., ed., Oli e Grassi, Milano, 1983.