S. N. B. Syed Abdul Mutalib and Nurul Fitriah Nasir, “The Effects of CaO-TiO2 Calcination Temperatures on the Catalyst Characterization and Palm Biodiesel Psychochemical Properties”, rpmme, vol. 5, no. 2, pp. 264–267, Dec. 2024, Accessed: Mar. 12, 2026. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/16812