Dobrucky, Branislav, Alena Otcenasova, Michal Pokorny, and Rastislav Tabacek. “The New Possibilities of Dynamic Compensation and Regeneration of Energy in Electric Traction”. Communications - Scientific letters of the University of Zilina 1, no. 1 (March 31, 1999): 5-12. Accessed April 6, 2026. http://journals.uniza.sk/index.php/communications/article/view/21.