1. McLean JW (1982) In: McLean JW (ed) Dental ceramics: proceedings of the first international symposium on ceramics, April 1982. Quintessence, Chicago, IL, pp 13–40
2. Jones DW (1985) Dent Clin N Am 29:621
3. O’Brien WJ (1985) J Am Dent Assoc 110:548
4. Grossmann DG (1985) In: O’Brien WJ, Craig RG (eds) Proceedings of conference on recent developments in dental ceramics, Ann Arbor, October 1983. Ceramic Engineering and Science Proceedings, American Ceramics Society, Columbus, OH, pp 19–40
5. Rouf MA, Hermansson L, Carlsson R (1978) Br Ceram Trans J 77:36