S. Samion, M. R. Daud, N. Sapawe, and A. Yahya. “An Investigation of Hard-on-Soft Sliding Contact Using Palm Fatty Acid Distillate”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2, no. 1 (October 15, 2014). Accessed May 19, 2024. https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/2522.