1. HW . Sizek ASTM Handbook 14a,
2. J.P. Domblesky R Shivpuri A Review of Radial Forging Technology including Preform Design for Process Optimization,
3. Christoph Leyens Manfred Peters Titanium and Titanium alloys, Fundamentals and Applications
4. G. Lutjering J.C. Williams Titanium,