1. T. Oberbach, S. Begand, W. Glien: Key Eng. Mater. Vol. 309-311 (2005), p.1269.
2. Luxation test according to PI-3: 1997-07 (accredited procedure at Endolab GmbH, Thansau / Rosenheim, Germany).
3. C. Kaddick, E. Steinhauser, D. Köhler, R. Gradinger.: Determination of Resistance to Luxations/Repositions of Total Hip Joint Prostheses in: Puhl, W. (ed. ) Bioceramics in Orthopaedics Enke, Stuttgart 1998, p.25.