Keke, M., D. E. Rockson-Itiveh, F. C. Ozioko, and T. F. Adepoju. “Hetero-Alkali Catalyst for Production of Biodiesel from Domesticated Waste: (Used Waste Oil)”. ABUAD International Journal of Natural and Applied Sciences, Vol. 3, no. 2, Sept. 2023, pp. 16-24, doi:10.53982/aijnas.2023.0302.2-j.