A. Gharehghani, R. Hosseini, T. Yusaf. Investigation of the Effect of Additives to Natural Gas on Heavy-Duty SI Engine Combustion Characteristics. J. Mech. Eng. Sci. [Internet]. 2013 Dec. 31 [cited 2024 Jul. 22];5(1):677-8. Available from: https://journal.ump.edu.my/jmes/article/view/8227