5 Genlen, P.C., The Science, Technology and Application of Titanium, Eds. Jaffee, R. I., et al., Pergaman Press, London, 1970, p.349．
[6]
6 Majdic, M.; Welsch, G.; Ziegler, G., Titanium and Titanium Alloys, Vol.3, Proc. of the 3rd Int. Conf. on Titanium, Moscow, 1976, Ed. Williams, J.C., Plenum Press, New York, 1982, p.1903．
8 Hisaoki, Sasano; Tokuzo Tsujimoto; Hirozo Kimuro, Titanium Science and Technology, Vol.3, Proc. of the Int. Conf. on Titanium, 2nd, Combridge, Mass. May 1972, Eds. Jaffee, R. I.; Burte, H.M., Plenum Press, New York, 1973, p.1635．
