Goman, V.V., V.A. Prakht, V.M. Kazakbaev, V.A. Dmitrievskii, E.A. Valeev, and A.S. Paramonov. 2021. “Analysis of the Payback Period of a Modernized Pump Unit With Induction Electric Motors of Advanced Energy Efficiency Classes”. Electrical Engineering & Electromechanics, no. 1 (February):15-19. https://doi.org/10.20998/2074-272X.2021.1.03.