Roschat, Wuttichai, Piyamas Butthichak, Natthasiya Daengdet, Sunti Phewphong, Teadkait Kaewpuang, Preecha Moonsin, Boonyawan Yoosuk, and Vinich Promarak. “Kinetics study of biodiesel production at room temperature based on eggshell-derived CaO as basic heterogeneous catalyst”. Engineering and Applied Science Research 47, no. 4 (November 5, 2020): 361–373. accessed May 10, 2025. https://ph01.tci-thaijo.org/index.php/easr/article/view/234505.