L. Andriušienė, A. Kairys, and P. Kostrauskas, “Revised Estimation of the External Characteristics of the Power Transformer”, ELEKTRON ELEKTROTECH, vol. 46, no. 4, Apr. 2003, Accessed: Oct. 15, 2026. Available: https://eejournal.ktu.lt/index.php/elt/article/view/11239