PETRA, Lukáš et al. Mechanochemically activated saponite as materials for Cu2+ and Ni2+ removal from aqueous solutions. In Applied Clay Science. - Amsterdam : Elsevier B.V., 2017. ISSN 0169-1317, 2017, vol. 143, pp. 22-28. Available on: https://doi.org/10.1016/j.clay.2017.03.012.