Hadzley, A.B., W.M. Azahar, A.A. Anis, R. Izamshah, M. Amran, S. Kasim, and S. Noorazizi. 1. “Development of Surface Roughness Prediction Model Using Response Surface Methodology for End Milling of HTCS-150”. Journal of Advanced Manufacturing Technology (JAMT) 12 (1(1), 467-76. https://jamt.utem.edu.my/jamt/article/view/4014.