1. J. O. M. Bockris. et al.: Disc. of Faraday Society, vol. 6, 1948, pp. 265–281.
2. A. Roll and H. Z. Motz: Metallkunde, 1957, vol. 48, p. 274.
3. E. M. Levin, H. F. McMurdie, and F. P. Hall: Phase Diagrams JOT Ceramists, Amer. Ceram. Soc., 1956, pp. 175–179.
4. R. A. Liutikov and L. M. Tsylev: Ritssian Mining and MetaLlurgy, no. 1, Jan.–Feb., 1963, pp. 12–19.
5. Yu. I. Kiryushin: Metalurg. Institut, Sbornik Nauk Trudov, no. 4, 1957, pp. 88–96.