Gavlina , O.T., Kargov , S.I. and Ivanov , V.A. 2022. The concept of gel diffusion in the kinetics of swelling and shrinking of a polystyrene sulfonic acid ion exchanger in the K+ form. Sorbtsionnye i Khromatograficheskie Protsessy. 21, 6 (Jan. 2022), 794-804. DOI:https://doi.org/10.17308/sorpchrom.2021.21/3824.