Afripin, M. A. A., N. A. Fadil, and M. Nasir Tamin. “Deformation Mechanics of Sputtered Copper Layers During Nanoindentation Tests”. Journal of Mechanical Engineering and Sciences 14, no. 1 (March 23, 2020): 6504 - 6513. Accessed January 22, 2021. https://journal.ump.edu.my/jmes/article/view/2002.