Yergozhin, Y., Taussarova, B., Ashkeyeva, R., & Tugelbayeva, L. (2013). Investigation of complexing ability of ionites with various groups to some heavy and transition metal ions. Chemical Bulletin of Kazakh National University, 69(1), 84-89. https://doi.org/https://doi.org/10.15328/chemb_2013_184-89