L. Rao Burthi and P. S.Prema Kumar, “Mitigation of Unbalanced Voltage Sags and Swells of Power System in Utility Side by using Sen Transformer”, IJET, vol. 7, no. 2.24, pp. 267–273, Apr. 2018, doi: 10.14419/ijet.v7i2.24.12062.