Jarzebowicz, Leszek, Maciej Cisek, and Artur Opalinski. “Angle Tracking Observer for Filtering Rotor Position Estimates in Sensorless Electric Drives”. Elektronika ir Elektrotechnika 22, no. 5 (October 3, 2016): 38–41. Accessed January 22, 2026. https://eejournal.ktu.lt/index.php/elt/article/view/16341.