1. R. K. Iler , The Chemistry of Silica: Solubility, Polymerization, Colloid and Surface Properties, and Biochemistry, Wiley-Interscience, New York, 1979
2. M. J. Perkins , Radical Chemistry, Ellis Horwood, New York, 1994
3. A. Ravve , Principles of Polymer Chemistry, Kluwer Academic, New York, 2nd edn, 2000
4. Phenothiazine cation radical formation on silica, silica-alumina and alumina
5. D. L. Griscom , in Defects in SiO2 and Related Dielectrics: Science and Technology, ed. G. Pacchioni, L. Skuja and D. L. Griscom, Kluwer, Dordrecht, 2000