1) Hench, L. L., Splinter, R. J., Allen W. C. and Greenlee, T. K., J. Biomed. Mater. Res. Symp., 2, 117-41 (1971).
2) For example, Wilson, J., Yli-Urpo, A. and Risto-Pekka, H., “Introduction to Bioceramics,” Ed. by Hench, L. L. and Wilson, J., World Sci., Singapore (1993) pp. 63-74.
3) Brömer, H., Pfeil, E. and Käs, H. H., German Patent No. 2, 326, 100 (1973).
4) Jarcho, M., Kay, J. L., Gumaer, R. H. and Drobeck, H. P., J. Bioeng., 1, 79-92 (1977).
5) Aoki, H., Kato, K., Ogiso, M. and Tabata, T., J. Dent. Outlook, 49, 567-75 (1977).