S. Anjum, M. Shah, N. A. Anjum, S. Mehmood, and W. Anwar, “Machining and Surface Characteristics of AISI 304L After Electric Discharge Machining for Copper and Graphite Electrodes in Different Dielectric Liquids”, Eng. Technol. Appl. Sci. Res., vol. 7, no. 4, pp. 1765–1770, Aug. 2017.