@ARTICLE {5590,
author={L. M. R. Oliveira and A. J. M. Cardoso and S. M. A.  Cruz},
doi={10.1016/j.epsr.2011.01.009},
journal={Electric Power Systems Research},
title={Power transformers winding fault diagnosis by the on-load exciting current Extended Park’s Vector Approach},
year={2011},
month={June},
volume={81},
number={6},
pages={1206-1214},
ISSN={0378-7796}
}