PhD, chief specialist of the Ministry of Internal Affairs of the Republic of Uzbekistan, Bobojonov Khikmat Shavkatovich, Usmanova Khilola Umatalievna DSc, Public Security University of the Republic of Uzbekistan, and Usmanova Zulaykho Asanalievna Head of the Department of Analytical chemistry, faculty of chemistry National university of Uzbekistan, Doctor of chemical sciences, professor. 2023. “IMPROVEMENT OF THEIR PHYSICAL-CHEMICAL PROPERTIES BY IMMOBILIZING THE REAGENTS USED IN THE DETERMINATION OF ALUMINUM, LEAD, INDIUM AND GALLIUM IONS BY THE SOLIDPHASE LUMINESCENT METHOD: ЧАСТЬ 1 ТОМ 1 ИЮЛЬ 2023 год”. Лучшие интеллектуальные исследования 1 (1):161-70. https://web-journal.ru/journal/article/view/46.