Mal'tseva, N. N.; Konoplev, V. N.; Antsyshkina, A. S.; Golovanova, A. I.; Sizareva, A. S.; et al.
Russian Journal of Inorganic Chemistry (Translation of Zhurnal Neorganicheskoi Khimii), 1995 , vol. 40, p. 783 - 788
Zhurnal Neorganicheskoi Khimii, 1995 , vol. 40, p. 811 - 816