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2. G. N. Kozin, et al., Ogneupory No. 2, p. 71 (1963).
3. A. P. Kudrina, et al., Stal' No. 9, p. 400 (1963).
4. G. V. Golov, et al., Stal' No. 6 (1965).
5. Refractories for Producting Steel Using Oxygen Symposium From English, Metallurgiya, [in Russian] (1965).