Latuheru, Reinyelda D., and Peter Sahupala. “Analysis of Lubricant Oil Characteristics Using the Ball Falling Relative Motion Method on Temperature Variations”. Engineering And Technology Journal 7, no. 10 (October 3, 2022): 1538–1543. Accessed November 27, 2024. https://everant.org/index.php/etj/article/view/727.