1. Diagram, E.P.: Materials and Processes in Manufacturing, Ch. 2. MacMillan Publishing Co, New York (1974)
2. Black, J.: Biological Performance of Materials - Fundamentals of Biocompatibility. Marcel Dekker, New York (1981)
3. Corrosion, W.C.: Corrosion, Wikipedia CD Selection (acessed August 27, 2009), http://schools-wikipedia.org/2006/wp/c/Corrosion.htm
4. Fernandez-Fairen, M., et al.: Aging of Retrieved Zirconia Femoral Heads. Clinical Orthopaedics and Related Research 462, 122–129 (2007)
5. Titanium (acessed August 29, 2009) , http://en.wikipedia.org/wiki/Titanium