1. 1) Ministry of Economy, Trade and Industry Manufacturing Industries Bureau Non-ferrous metal division: Evaluation Summary of Process development of High performance Titanium alloy (2010-04-09) pp. 1-25.
2. 2) S. Mizuno, H. Nakaji and H. Yoshikawa: Proc. 1st Research Workshop on Titanium Forum (The Iron and Steel Institute of Japan 2017) pp. 54-59.
3. 3) T. Saito and T. Furuta: Toyota Central Research and Development R&D Review 29(1994) 49-60.
4. 4) T. Furuta: Research of Titanium Based Materials with Controlled Elastic Properties, Doctoral Theses, Tohoku University(2008) pp. 1-250.
5. 5) T. Furuta, T. Saito and T. Yamaguchi: Toyota Central Research and Development R&D Review 36(2001) 51-56.