Patel, A. R. and Bhavsar, S. N. (2021) “Laser Machining of Die Steel (EN-31): An Experimental Approach to Optimise Process Parameters using Response Surface Methodology”, International Journal of Automotive and Mechanical Engineering, 18(1), pp. 8563 –. doi: 10.15282/ijame.18.1.2021.15.0650.