A. A. Mossa, M., A. A. Hairuddin, A. A. Nuraini, J. Zulkiple, and H. M. Tobib. “Effects of Hot Exhaust Gas Recirculation (EGR) on the Emission and Performance of a Single-Cylinder Diesel Engine”. International Journal of Automotive and Mechanical Engineering, vol. 16, no. 2, July 2019, pp. 6660-74, doi:10.15282/ijame.16.2.2019.14.0501.