Volkov, V. A., and D. V. Dovbischuk. “IMPROVEMENT OF FREQUENCY START OF HYDROELECTRIC PUMPED STORAGE POWER PLANT IN THE PUMPING MODE”. Electrical Engineering and Power Engineering, no. 1 (July 10, 2015): 55–61. Accessed November 29, 2024. https://ee.zp.edu.ua/article/view/87204.