SEILKHANOVA, G. et al. 2018. PRELIMINARY ASSESSMENT OF MODIFIED KAZAKH NATURAL ZEOLITES AS POSSIBLE SORBENTS FOR MnO4- REMOVAL FROM AQUEOUS SOLUTIONS. Studia Universitatis Babeș-Bolyai Chemia. 63, 4 (Dec. 2018), 181–192. DOI:https://doi.org/10.24193/subbchem.2018.4.15.