Safarov Megli Djumaevich, Shonazarov Erkin Bazarovich, Musharrapov Fakhriyor Bakhtiyorovich, and Juraev Asrorbek Muzafar oglu, “ABOUT HYDROCLEANING CATALYSTS”, Galaxy int. interdiscip. res. j., vol. 9, no. 6, pp. 201–203, Jun. 2021.