Sovetova, Kundyz, and Akmaral Ismailova. “Treatment of Waste Water Containing Chromium (VI)”. Chemical Bulletin of Kazakh National University 99, no. 4 (December 21, 2020): 4-10. Accessed April 20, 2024. https://bulletin.chemistry.kz/index.php/kaznu/article/view/1113.