A. Said, Mior, L K. Mun, A R. A. Aziz, and . . “Wall Heat Transfer Analysis of Internal Combustion Engine With Free Piston Linear Motion”. International Journal of Engineering and Technology 7, no. 3.17 (August 1, 2018): 141–144. Accessed February 15, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/16639.