Giraldo, L.C., Mora, J.J. and Olguin, G. 2008. evaluation of the stator ground-fault protection for synchronous generators by means of the subharmonic injection method. Ingeniería y Competitividad. 10, 1 (Jan. 2008), 21–30. DOI:https://doi.org/10.25100/iyc.v10i1.2478.