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2. C.J. Brinker, G.W. Scherer, Sol–Gel Science: The Physics and Chemistry of Sol–Gel Processing, Academic Press, San Diego, 1990.
3. R.W. Jones, Fundamental Principles of Sol–Gel Technology, The Institute of Metals, London, 1989.
4. The sol-gel process
5. L.C. Klein, Sol–Gel Technology for Thin Films, Fibers, Performs, Electronics, and Speciality Shapes, Noves Publication, Park Ridge, NJ, 1988.