For citations:
Yarish R.F., Garifullina A.R., Garifullin R.I., Yakunin A.N. INVESTIGATION OF OPERATING MODES OF FREQUENCY-REGULATED ELECTRIC DRIVE OF PUMPJACK. Power engineering: research, equipment, technology. 2018;20(11-12):56-64. (In Russ.) https://doi.org/10.30724/1998-9903-2018-20-11-12-56-64