Sorption selectivity of cobalt(II), nickel(II), and copper(II) ions by KB-2E macroreticular carboxylic cation exchanger from aqueous-salt solutions of alkali metals / L. A. Bobkova, V. V. Kozik, T. V. Odnostorontseva, V. V. Petrova // Russian journal of applied chemistry. 2012. Vol. 85, № 7. P. 1052-1058. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000436085