1. N. Kh. Abrikosov and V. F. Bankina, Zh. Neorgan. Khimii,3, 659 (1958).
2. N. Kh. Abrikosov, L. V. Poretskaya, and I. P. Ivanova, Zh. Neorgan. Khimii,4, 2525 (1959).
3. N. Kh. Abrikosov, V. F. Bankina, and K. F. Kharitonovich, Zh. Neorgan. Khimii, 5, 2011 (1960).
4. A. C. Glatz, J. Electrochem. Soc.,112, 1204 (1965).
5. S. A. Semiletov, Kristallografiya,1, 4, 403 (1956).