1. Iler RK. The chemistry of silica. Chichester: Wiley; 1979.
2. Legrand AP, editor. The surface properties of silicas. New York: Wiley; 1998.
3. Vansant EF, Van Der Voort P, Vrancken KC. Characterization and chemical modification of the silica surface. Amsterdam: Elsevier; 1995.
4. Dabrowski A, Tertykh VA, editors. Adsorption on new and modified inorganic sorbents, studies in surface science and catalysis, vol. 99. Amsterdam: Elsevier; 1996.
5. Leboda R. The chemical nature of adsorption centres in modified carbon–silica adsorbents prepared by the pyrolysis of alcohols. Chromatographia. 1980;11:703–8.