“APPLICATION OF MODIFIED SORBENTS BASED ON POLYACRYLONITRILE FIBER IN THE PURIFICATION OF NATURAL WATERS FROM COPPER IONS”. JournalNX - A Multidisciplinary Peer Reviewed Journal 7, no. 03 (March 17, 2021): 183–186. Accessed September 19, 2025. https://repo.journalnx.com/index.php/nx/article/view/2751.