Rizkiana, J., Bryan, B., Gozali, E., Bustomi, A. T. A., & Prakoso, T. (2024). Hematite-Gamma Alumina-based Solid Catalyst Development for Biodiesel Production from Palm Oil . Journal of Engineering and Technological Sciences, 56(1), 50–60. https://doi.org/10.5614/j.eng.technol.sci.2024.56.1.4