“The Thermodynamic Describe of Super-Equivalent Sorption of Phenylalanine by Cation-Exchanger KU-2-8 and Anion-Exchanger AV-17-8”. 2019. Sorbtsionnye I Khromatograficheskie Protsessy 11 (5). https://journals.vsu.ru/sorpchrom/article/view/1966.