Chuepeng, S., C. Chinwanitcharoen, W. Ruengphrathuengsuka, and E. Sutheerasak. “Performance and Emission Characteristics of a High-Speed Diesel Engine Using a 20% Palm Oil Ester and Ethyl Alcohol Blend”. International Journal of Automotive and Mechanical Engineering, vol. 21, no. 2, June 2024, pp. 11372-85, doi:10.15282/ijame.21.2.2024.15.0878.