1. R.P. Scott, Silica Gel and Bonded Phases, Wiley, Chichester, 1993.
2. P.R. Haddad, P.E. Jackson, Ion Chromatography: Principles and Applications, Elsevier, Amsterdam, 1990.
3. K.K. Unger, Porous Silica, Elsevier, Amsterdam, 1979.
4. Liquid chromatographic separation of metal ions on a silica column
5. Anion—cation separations on a mixed bed alumina—silica column