Satpal Singh, Rajeev Kumar, Lakshya Aggarwal, and Jagjit Singh. 2018. “Study of WEDM Process on Surface Roughness of H-11 (Hot Die Steel)”. International Journal for Research Publication and Seminar 9 (5):13-18. https://jrps.shodhsagar.com/index.php/j/article/view/1351.