1. Tantalum;Pokross,1990
2. The current status of uncemented tantalum and niobium femoral endoprostheses;Plenk,1984
3. Tantalum and niobium as potential prosthetic materials;Schider,1982
4. A general consideration of metals for buried appliances in surgery;Venable;Inter. Abst. Surg.,1943