Deepak, D., Shrinivas, P., Hemant, G. and Iasy, R. (2018) “Optimisation of Current and Pulse Duration in Electric Discharge Drilling of D2 Steel Using Graphite Electrode”, International Journal of Automotive and Mechanical Engineering, 15(4), pp. 5914-5926. doi: 10.15282/ijame.15.4.2018.14.0451.