D. Pylarinos, K. Siderakis, E. Pyrgioti, E. Thalassinakis, and I. Vitellas, “Investigation of Leakage Current Waveforms Recorded in a Coastal High Voltage Substation”, Eng. Technol. Appl. Sci. Res., vol. 1, no. 3, pp. 63–69, Jun. 2011.