1. Chin T S, Wu D C, Hung M P and Wang C P 1996J. Mater. Res. 11 962
2. Coolidge B J and Howard R M 1979 inAnimal histology procedures (Bethesda, Maryland, USA: US Dept. of Health, Education, and Welfare, Public Health Service, National Institute of Health, NIH Pub. No. 80-275) 2nd ed. p. 32
3. Engin N Ö and Tas, A C 2000J. Am. Ceram. Soc. 83 1581
4. Fernandez E, Gil F J, Ginebra M P, Driessens F C M, Planell J A and Best S M 1999J. Mater. Sci.: Mater. Med. 10 169
5. Hench L L 1991J. Am. Ceram. Soc. 74 1487