Khalaf I. Hamada, Rahman M. An Experimental Study for Performance and Emissions of a Small Four-Stroke SI Engine for Modern Motorcycle. Int. J. Automot. Mech. Eng. [Internet]. 2022 Dec. 9 [cited 2024 May 18];10:1852-1865,. Available from: https://journal.ump.edu.my/ijame/article/view/7990