Kolesnikov, A. V., R. D. Tangalichev, N. B. Berezin, and Z. V. Mezhevich. “INFLUENCE OF BACKGROUND ELECTROLYTE AND SURFACE-ACTIVE SUBSTANCES ON EFFICIENCY OF ELECTRO-FLOTATION EXTRACTION OF HARDLY SOLUBLE EUROPIUM COMPOUNDS”. ChemChemTech, Vol. 63, no. 5, Apr. 2020, pp. 76-83, doi:10.6060/ivkkt.20206305.6138.