1. W. D. Kingery, ?Introduction to Ceramics? (John Wiley and Sons, New York, 1976).
2. ?Polymer Handbook?, edited by J. Brandrup and E. H. Immergut (John Wiley and Sons, New York, 1966).
3. ?Encyclopedia of Polymer Science and Technology?, Vols. 10 and 13, edited by N. M. Bikales (John Wiley and Sons, New York, 1970).
4. G. W. Morey, ?The Property of Glass? (Reinhold Publishing Corporation, New York, 1954) Chap. 4 and 11.
5. W. A. Weyl and E. C. Marboe, ?The Constitution of Glasses?, Vol. II, Part 2 (Wiley, New York, 1967) p. 1086.