Mustapha, A. O., A. A. Adebisi, and B. O. Olanipekun. “Characterization of Biodiesel from Alkaline Refinement of Waste Cooking Oil”. International Annals of Science, vol. 10, no. 1, Sept. 2020, pp. 16-24, doi:10.21467/ias.10.1.16-24.