Zhurnal Neorganicheskoi Khimii, , vol. 10, p. 1057 - 1058
Zhurnal Neorganicheskoi Khimii, , vol. 10, p. 1939 - 1940
Zhurnal Neorganicheskoi Khimii, , vol. 12, p. 449 - 450
Zhurnal Neorganicheskoi Khimii, , vol. 12, p. 851 - 856
Sc: MVol.C3, 6.2.2.1.10, page 39 - 39