Toychiev, F. N., H. J. Achilov, H. N. Mamadiev, and Zh. B. Razhabov. 2021. “Energy Saving With Two-Speed Motors in Pumping Stations”. Journal of Ethics and Diversity in International Communication 1 (6):115-18. https://oajournals.net/index.php/jedic/article/view/751.