Sumatri, Indro, Hadiyanto Hadiyanto, Suherman Suherman, and Marcellinus Christwardana. 2023. “Production of Biodiesel Using Enzymatic Esterification of Multi-Feedstock Oils”. ASEAN Journal of Chemical Engineering 23 (2), 194-209. https://dev.journal.ugm.ac.id/v3/AJChE/article/view/9745.