Determination of axial displacement extent based on transformer winding transferfunction estimation using vector-fitting method. European Transactions on Electrical Power (ETEP), (18):423-436, 2008. [PUMA: Determination axial based displacement estimation extent method transferfunction transformer vector-fitting winding]
Localization of Winding Radial Deformation and Determination of Deformation Extent using Vector Fitting-based Estimated Transfer Function. European Transactions on Electrical Power (ETEP), (19)5:749–762, July 2009. [PUMA: Deformation Determination Estimated Extent Fitting-based Function Localization Radial Transfer Vector Winding]