MEREZHKO Н., and SHULGA О. “dsorption roperties of aolin from krainian eposits”. "INTERNATIONAL·SCIENTIFIC-·PRACTICAL·JOURNAL·COMMODITIES·AND·MARKETS", vol. 18, no. 2, Dec. 2014, pp. 148-55, https://journals.knute.edu.ua/commodities-and-markets/article/view/1307.