1. W. KRAUSE and R. S. MATHIS,J. Biomed. Mater. Res. 22 (1988) 37.
2. R. N. STAUFFER,J. Bone Joint Surg. 64 (1982) 983.
3. C. J. HOOLEY, D. R. MOORE, M. WHALE and M. M. WILLIAMS,Plast. Rubber Process. Applics 1 (1981) 345.
4. A. D. SCHELLER and J. D'ERRICO, in ?Revision total hip arthroplasty? (Grune and Stratton, New York, 1982) p. 49.
5. C. T. WANG and R. M. PILLIAR,J. Mater. Sci. 24 (1989) 2391.