Vodovozov, Valery, and Ilja Bakman. “Performance Improvement of Pumps Fed by the Variable Speed Drives”. Electrical, Control and Communication Engineering 4, no. 1 (December 1, 2013): 45–51. Accessed November 5, 2024. https://ecce-journals.rtu.lv/ecce/article/view/ecce-2013-0021.