• Directional calibration of rogowski coil for localization of partial discharges in smart distribution networksShafiq, Muhammad; Kütt, Lauri; Isa, M.; Hashmi, M.; Lehtonen, MattiInternational review of electrical engineering2012 / p. 5881-5890 https://www.researchgate.net/publication/262703688_Directional_Calibration_of_Rogowski_Coil_for_Localization_of_Partial_Discharges_in_Smart_Distribution_Networks
• Online partial discharge diagnostics in medium voltage branched cable networksShafiq, Muhammad; Lehtonen, Matti; Isa, M.; Kütt, LauriProceedings of 2013 Fourth International Conference on Power Engineering, Energy and Electrical Drives (POWERENG) : Istanbul, Turkey, 13-17 May 20132013 / p. 246-251 : ill