%0 Journal Article %T Power Transformer Differential Protection Through Gradient of the Differential Current %A Alencar, Raidson %A Bezerra, Ubiratan %J Journal of Control, Automation and Electrical Systems %V 24 %N 2 %P 162-173 %@ 2195-3880 %D 2013-03-26 %I Springer US %~ DeepDyve