Rizkiana J, Bryan B, Gozali E, Bustomi ATA, Prakoso T. Hematite-Gamma Alumina-based Solid Catalyst Development for Biodiesel Production from Palm Oil . J. Eng. Technol. Sci. [Internet]. 2024 Feb. 29 [cited 2025 Nov. 11];56(1):50-6. Available from: https://jets.itb.ac.id/jets/article/view/5