1. 1) R. F. Bartholomew and H. M. Garfinkel, “Chemical Strengthening of Glass”, Ed. by D. R. Uhlmann and N. J. Kreidl, Academic Press (1980) pp. 214–270.
2. 2) C. Symmers, J. B. Ward and B. Sugarman, Phys. Chem. Glasses, 3, 76–83 (1962).
3. 3) B. Sugarmann, J. Mater. Sci., 2, 275–283 (1967).
4. 4) C. W. Sinton and W. C. LaCourse, Mater. Res. Bull., 36, 2471–2479 (2001).
5. 5) A. K. Varshneya and W. C. LaCourse, Ceram. Trans., 29, 365–376 (1993).