Zbigniew Lubośny, Maciej Łosiński. “Hydro Power Plant in the Process of Voltage Control in the Electric Power System and the System Restoration”. Acta Energetica, no. 03 (September 30, 2019): 39–43. Accessed July 3, 2024. https://actaenergetica.org/index.php/journal/article/view/68.