1. R. ADELL, B. ERICSSON, U. LEKHOLM, P. I. BRÅNEMARK and T. JEMT, Int. J. Oral. Maxillofacial implants 5 (1990) 347.
2. L. E. ERICSON, B. R. JOHANSSON, A. ROSENGREN, L. SENNERBY and P. THOMSEN, in ?The bone-biomaterial interface?, edited by J DAVIS (toronto University Press, 1991) p. 425.
3. P. THOMSEN and L. E. ERICSON, in ?The bone-biomaterial interfaces?, edited by J. DAVIES (Toronto University Press, 1991) p. 153.
4. C. B. JOHANSSON, T. ALBREKTSSON, P. THOMSEN, L. SENNERBY, A. LODDING and H. ODELIUS, Eur. J. Exp. Musculoskel. Res. 1 (1992) 161.
5. H. HAMANAKA, H. DOI, T. YONEYAMA and O. OKUNO. J. Dent. Res. 68 (1989) 1529.