“The Thermodynamic Describe of Super-Equivalent Sorption of Phenylalanine by Cation-Exchanger KU-2-8 and Anion-Exchanger AV-17-8”. Sorbtsionnye I Khromatograficheskie Protsessy, vol. 11, no. 5, Nov. 2019, https://journals.vsu.ru/sorpchrom/article/view/1966.