Shaposhnik, Vladimir A. “Effective Ion Charges in Ion Exchangers and Electrolyte Solutions”. Sorbtsionnye i Khromatograficheskie Protsessy 23, no. 5 (December 27, 2023): 965-972. Accessed December 5, 2025. https://journals.vsu.ru/sorpchrom/article/view/11731.