M.S. Abolarin, M.A. Muregi, and O.J. Okegbile, E.J. Eterigho, I.P. Okokpujie. 2021. “Emission Comparison of Air-Fuel Mixtures for Pure Gasoline and Bioethanol Fuel Blend (E20) Combustion on Sparking-Ignition Engine”. COVENANT JOURNAL OF ENGINEERING TECHNOLOGY 5 (1). https://journals.covenantuniversity.edu.ng/index.php/cjet/article/view/2591.