Roschat, Wuttichai. “The Optimized Conditions of Ethanolysis Reaction of Palm Oil to Biodiesel Product Using Eggshells-Derived CaO as a Solid Heterogeneous Catalyst”. Indochina Applied Scienceห 7, no. 2 (August 28, 2018): 295–299. accessed October 4, 2026. https://ph01.tci-thaijo.org/index.php/jmsae_ceae/article/view/139895.