Aderibigbe, A., A. Ogunsola, and W. Sanusi. “EFFECTS OF EXHAUST GAS RECIRCULATION ON PERFORMANCE AND EXHAUST GAS EMISSIONS OF SPARK IGNITION ENGINES”. LAUTECH Journal of Engineering and Technology 7, no. 1 (August 2, 2011): 110-115. Accessed June 23, 2021. https://laujet.com/index.php/laujet/article/view/99.