Azhar, Muhammad Izzudin, Azrul Fadzli Mohd Fazri, Amir Khalid, Muhamad Asri Azizul, Shaiful Fadzil Zainal Abidin, Muammar Mukhsin Ismail, and Nofrizalidris Darlis. “Research on The Ultra-Low Emission Technology in Internal Combustion Engine”. Journal of Automotive Powertrain and Transportation Technology 3, no. 1 (June 25, 2023): 1–8. Accessed July 18, 2024. https://publisher.uthm.edu.my/ojs/index.php/japtt/article/view/14569.