V. M. Jimenez-Mondragon, V. J. Fernandez Carrazana, J. C. Olivares Galvan, and R. Ocon Valdez, “Short-circuit Impedance Calculation of 25 MVA Autotransformer with Tertiary Winding using FEM”, IEEE LAT AM T, vol. 21, no. 3, pp. 498–504, Mar. 2023.