Ziyovuddin qizi, M. S. “QUDUQ NASOSLARI UCHUN CHASTOTA O’ZGARTRGICHNI QO’LLASH VA ELEKTR ENERGIYANI TEJASH”. INNOVATIVE DEVELOPMENTS AND RESEARCH IN EDUCATION, vol. 2, no. 15, Mar. 2023, pp. 25-33, https://interonconf.org/index.php/idre/article/view/2811.