1. M. B. Babanly and A. A. Kuliyev, Zh. Neorg. Khim., 27 (1982) 1538.
2. M. Hansen and K. Anderko, Constitution of Binary alloys, McGraw-Hill Book Company, Inc., New York-Toronto-London 1958; Russian translation, Metallurgizdat, Moskva 1962, p. 75.
3. F. C. Kracek, C. J. Ksanda and L. I. Cabri, Am. Mineral., 51 (1966) 14.
4. A. Rabenau, A. Stegherr and P. Eckerlin, Z. Metallkde, 15 (1960) 295.
5. V. P. Vasiliev, A. V. Nikolskaya, J. I. Gerasimov and A. F. Kuznetsov, Izv. Akad. Nauk SSSR Neorg. Mater., 4 (1968) 1040.