Wisdom Chukwuemeke Ulakpa. 2021. “Characterization and Optimization Study of Transesterification of Non-Edible Oil Using Response Surface Methodology”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT 7 (3):11-22. https://doi.org/10.31695/IJERAT.2021.3692.