1. Du Sichen, J. Bygden, and S. Seetharaman: Metall. Mater. Trans. B, 1994, vol. 25B, pp. 1–7.
2. L. Bodnar, K. Cempa, K. Tomasek, and L. Bobok: Chem. Zvesti, 1987, vol. 32, p. 798.
3. P. Williams, M. Sunderland, and G. Briggs: Trans. Inst. Min. Metall. Eng., 1983, vol. 92C, pp. 105–09
4. F. Johannsen and W. Sishkov: Erzmetallurgy, 1988, vol. 11, pp. 1–15
5. P.P. Kozakevitch: Rev. Metall., 1949, vol. XLVI (9), pp. 572–82.