Cuong, L. P., P. H. Giang, B. D. Hanh, and G. Bátor. “A Study of the Adsorption Characteristics of Cobalt and Caesium from a Solution by Using Vietnamese Bentonite”. Hungarian Journal of Industry and Chemistry, vol. 43, no. 2, Aug. 2015, pp. 79-83, doi:10.1515/hjic-2015-0013.