“The Effect of Varying Process Parameters on the Microhardness and Microstructure of Cu–Steel and Al–Al2O3 Friction Joints”.
Jurnal Teknologi (Sciences & Engineering) 41, no. 1 (February 25, 2012): 85–95. Accessed March 14, 2025.
https://journals.utm.my/jurnalteknologi/article/view/693.