参考文献
Opalovskii, A. A.; Labkov, E. U.; Zakhar'ev, Yu. V.; Kuchumova, L. Ya.
Russian Journal of Inorganic Chemistry (Translation of Zhurnal Neorganicheskoi Khimii), 1977 , vol. 22, p. 641 - 643
Zhurnal Neorganicheskoi Khimii, 1977 , vol. 22, p. 1174 - 1177