Moch. Setyadji, and Endang Susiantini. “ION EXCHANGE COLUMN PERFORMANCE MODE LFOR SEPARATION OF ZIRCONIUM AND HAFNIUMIN ADSORPTION PROCESS”. Jurnal Sains Materi Indonesia, vol. 16, no. 2, Jan. 2015, pp. 65-71, doi:10.17146/jsmi.2015.16.2.4212.