“INVESTIGATION OF THE OPERATION MODES OF PROTECTION AGAINST SINGLE-PHASE EARTH FAULT IN THE NETWORK WITH ISOLATED NEUTRAL POINT IN PRESENCE OF FERRORESONANCE PROCESSES”. Visnyk of Vinnytsia Politechnical Institute, no. 4, Sept. 2015, pp. 61-69, https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/768.