1. 1) G. Wang, X.-H. Zhang and Z.-Z. Xu: Jiangsu Metall., 36 (2008), 69 (in Chinese).
2. 2) M. Hillert: Phase Equilibria, Phase Diagrams and Phase Transformations, Cambridge University Press, Cambridge, UK, (1998), 155, 302.
3. 3) G. H. Gulliver: J. Inst. Met., 9 (1913), 120.
4. 4) G. H. Gulliver: J. Inst. Met., 11 (1914), 252.
5. 5) G. H. Gulliver: J. Inst. Met., 13 (1915), 263.