1. W. Köster and W. Tonn:Arch. Eisenhuettenwes., 1933, vol. 7 (6), pp. 365–66.
2. D.J. Schmatz:Trans. AIME, 1959, vol. 215, pp. 112–14.
3. A.S. Il’yushin and M.I. Zakharova:Fiz. Met. Metalloved., 1969, vol. 28 (5), pp. 955–58.
4. G.L. Kayak:Met. sci. Heat Treat., 1969, vol. 11 (2), pp. 95–97.
5. D.J. Chakrabarti:Metall. Trans. B, 1977, vol. 8B, pp. 121–23.