9[2]Ayhan Demirbas.Biodiesel from vegetable oils via transesterification in supercritical methanol[J].Energy conversion and Management,2002,43 (17):2 349～2 355.
10[3]Ma F.,Clements L.D.,Hanna M..The effects of catalyst,free fatty acids and water on transesterification of beef tallow[J].Transactions of the ASAE,1998,41 (5):1261～1265.
