Kairbekov, Zhaksyntay, Zh. Arziev, V. Yemelyanova, and E. Baizhomartov. “The Reception of Humic Derivatives With Increased Sorption Ability on Mineral Matrixes”. Chemical Bulletin of Kazakh National University 71, no. 3 (September 14, 2013): 136-143. Accessed June 30, 2022. https://bulletin.chemistry.kz/index.php/kaznu/article/view/103.