M. . Shahid Mastoi, M. . Shahzad Nazir, M. . Imran Chandia, M. . Shakeel Khosa, and H. M. . Jamsheed Nazir, “Optimization of heating characteristics of gas insulated switch-gear (GIS)”, Sci. J. Rev., vol. 7, no. 1, pp. 572-590, Jan. 2018.