Syutova, E.A. and Dzhigola, L.A. 2020. Research of the kinetic regularities of calcium ions solid-phase concentration by natural sorbents. Sorbtsionnye i Khromatograficheskie Protsessy. 20, 1 (Feb. 2020), 64-78. DOI:https://doi.org/10.17308/sorpchrom.2020.20/2381.