Filka, R., P. Balazovic, and Branislav Dobrucky. “A Sensorless PM Synchronous Motor Drive for Electric Washers”. Communications - Scientific letters of the University of Zilina 9, no. 1 (March 31, 2007): 24-32. Accessed April 6, 2026. http://journals.uniza.sk/index.php/communications/article/view/1110.