Nelson Evangnum Jack, Suleiman Yunusa, Abdulkareem Abubakar, and Haruna Ibrahim. “Conversion of Jatropha Curcas Oil to Biodiesel in One-Step Transesterification Using Cowbone Derived CaO Al2O3 With Fe2(SO4)3 Catalyst”. Journal of Science and Technology 17, no. 1 (June 21, 2025): 61–70. Accessed March 12, 2026. https://penerbit.uthm.edu.my/ojs/index.php/JST/article/view/19414.