1. R. E. Kirk, D. F. Othmer, J. I. Kroschwitz, M. Howe-Grant, and L. Humphreys, Encyclopedia of Chemical Technology (Wiley, New York, 1992).
2. www.sol-gel.com; www.isgs.org
3. A. N. Semenov and M. Rubinstein, Macromolecules 31, 1373 (1998).
4. S. K. Kumar and J. F. Douglas, Phys. Rev. Lett. 87, 188301 (2001).
5. E. Zaccarelli, J. Phys.: Condens. Matter 19, 323101 (2007).