1. P.G. Rustamov, Z.D. Melikova, M.G. Safarov, and M.A. Alidzhanov: Izv. AN SSSR, Neorg. Mater., 1968, 4, pp. 2028–29 (in Russian).
2. R.R. Yadav, R.P. Ram, and S. Bhan: Z. Metallkd., 1976, 67, pp. 173–76.
3. M.M. Asadov, M.B. Babanly, and A.A. Kuliev: Izv. AN SSSR, Neorg. Mater., 1977, 13, pp. 1407–10 (in Russian).
4. M.M. Asadov, M.B. Babanly, and A.A. Kuliev: Azerb. Khim. Zh., 1977, 2, pp. 94–96 (CA, 1977, 87, 123386j).
5. M.M. Asadov, M.B. Babanly, and A.A. Kuliev: Izv. AN SSSR, Neorg. Mater., 1977, 13, pp. 1520–21 (in Russian).