“ANALYSIS OF UNREGULATED ASYNCHRONOUS ELECTRIC DRIVE OPERATION MODES WITH MASSIVE FERROMAGNETIC SCREENS IN SHORT-CIRCUIT ROTOR CONTOUR”. Visnyk of Vinnytsia Politechnical Institute, no. 6, Feb. 2016, pp. 121-4, https://vpi.sprava.net/index.php/visnyk/article/view/1861.