1. ORMOCER is a registered trademark from Fraunhofer organisation in Germany describing inorganic-organic hybrid polymers
2. NANOMER is a registered trademark from Leibniz-Institute for New Materials gGmbH in Germany describing nanocomposite coatings and compact materials
3. Brinker CJ, Scherer GW (1989) Sol-gel-science. Academic Press, New York
4. Hench LL, Ulrich DR (1984) Ultrastructure processing of ceramics. Glasses and composites. Wiley, New York
5. Hench LL, West JK (1990) The sol-gel process. Chem Rev 90:33