1. Alcoa. http://www.alcoa.com/fastening_systems_and_rings/aerospace/en/product.asp?cat_id=544&prod_id=812 (last visited on March 2, 2015).
2. Metallic scaffolds for bone regeneration;Alvarez;Materials,2009
3. Standard specification for titanium and titanium alloy bars and billets;ASTM,2005
4. AV Healthcare. http://www.indiamart.com/avhealthcare/surgical-screws.html (last visited on March 2, 2015).
5. Baoji Jinhaiyuan Titanium Industry & Trade Co., Ltd. http://tibthy.en.made-in-china.com/productimage/vezxpydYElWb-2f1j00seDtpydgrloC/China-Titanium-Round-Head-Rivets-Titanium-Solid-Rivet-07-.html (last visited on March 2, 2015).