Islom Khafizov, Komil Gafforov, Zilola Imomova3. Reduced Capital Costs When Using a Frequency-Controlled Electric Drive in Pumping Units. IJIE [Internet]. 2021 Apr. 14 [cited 2026 Nov. 5];4(4):73-81. Available from: https://journals.researchparks.org/index.php/IJIE/article/view/1607