How, C. B., N. M. Taib, and M. R. A. Mansor. 2019. “Performance and Exhaust Gas Emission of Biodiesel Fuel With Palm Oil Based Additive in Direct Injection Compression Ignition Engine”. International Journal of Automotive and Mechanical Engineering 16 (1):6173-87. https://doi.org/10.15282/ijame.16.1.2019.7.0469.