Yurchenko, O. Y., and H. V. Barsukova. “USING A FREQUENCY CONVERTER IS AN EFFECTIVE AND CONVENIENT WAY TO CONTROL THE SPEED OF THE PUMP UNIT”. Bulletin of Sumy National Agrarian University. The Series: Mechanization and Automation of Production Processes, no. 3 (45), Sept. 2021, pp. 57-63, doi:10.32845/msnau.2021.3.8.