Sasirin Labua, Chalermpol Sriadulphan, Sunattra Sangkong, & Napachalee Puangmalai. (2008). Biodiesel with Decreased Viscosity Produced from Crude Palm Oil. Agriculture and Natural Resources, 42(5), 300–304. retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/244610