N., Radhika, and M. Sam. “Statistical Analysis of Tribological Performance of Functionally Graded Copper Composite Using DOE”. International Journal of Automotive and Mechanical Engineering 18, no. 3 (September 19, 2021): 8978–8985. Accessed April 26, 2024. https://journal.ump.edu.my/ijame/article/view/6020.