F. Firdiyono, M. Handayani, E. Sulistiyono, and I. D. Antoro, “ PERCOBAAN PENDAHULUAN PERBANDINGAN DAYA SERAP UNSUR MINOR DALAM LARUTAN NATRIUM SILIKAT[Preliminary Comparative Study on the Adsorption of Minor Elements in Sodium Silicate Solution]”, Metalurgi, vol. 27, no. 1, pp. 15–26, Apr. 2012.