Maksymilian Przygrodzki, Piotr Rzepka, Mateusz Szablicki. “Application of Voltage-Regulating and Phaseshifting Transformers to Control Power Flows in the Power System”. Acta Energetica, no. 04 (December 31, 2015): 87–98. Accessed July 22, 2024. https://actaenergetica.org/index.php/journal/article/view/455.