1. W.J. Kroll: Trans. Electrochem. Soc., 1940, vol. 78, pp. 35–47.
2. H. Kametani and Y. Kurihara: in Titanium 95 Science and Technology, P.A. Blenkinsop, W.J. Evans, and H.M. Flower, eds., The Institute of Materials, London, 1996, vol. 3, pp. 2602–09.
3. G.R.B. Elliot: JOM, 1998, vol. 50 (9), pp. 48–49.
4. H.Y. Sohn: JOM, 1998, vol. 50 (9), pp. 50–51.
5. T.N. Deura and K. Ono: Metall. Mater. Trans. B, 1999, vol. 30B, pp. 403–10.