Hamada, Khalaf Ibrahim, M. F. Rahim, M. M. Rahman, and R. A. Bakar. “Throttling Effect on the Performance and Emissions of a Multi-Cylinder Gasoline Fuelled Spark Ignition Engine”. International Journal of Automotive and Mechanical Engineering 19, no. 4 (December 28, 2022): 10084–10093. Accessed March 29, 2024. https://journal.ump.edu.my/ijame/article/view/5457.