Onen, A. I., B. Wakil, and J. C. Akan. “POTENTIAL OF MAGNETIC SAND AS CATALYST FOR THE HETEROGENEOUS TRANSESTERIFICATION OF Ziziphus Abyssinica SEED OIL TO BIODIESEL ”. Journal of Chemical Society of Nigeria 50, no. 4 (August 14, 2025). Accessed September 26, 2025. http://www.journals.chemsociety.org.ng/index.php/jcsn/article/view/1095.