1. M. A. Shtremel', Metalloved. Term. Obrab. Met., No. 5, 69 (1977).
2. R. Kiessling, "Nonmetallic inclusions in steel. Part III." London, Iron Steel Inst. Publ. No. 115, (1968), p. 128.
3. V. I. Yavoiskii et al., Inclusions and Gases in Steels [in Russian], Metallurgiya, Moscow (1979).
4. I. P. Volchok, Probl. Prochn., No. 9, 87 (1973).
5. H. Spiess, Behavior of Nonmetallic Inclusions in Steel during Crystallization and drof Deformation [Russian translation], Metallurgiya, Moscow (1971).