Aksinenko, A.Yu.; Pushin, A.N.; Sokolov, V.B.
Phosphorus, Sulfur and Silicon and the Related Elements, 1993 , vol. 84, # 1-4 p. 249 - 252

Aksinenko, A.Yu.; Pushin, A.N.; Sokolov, V.B.
Phosphorus, Sulfur and Silicon and the Related Elements, 1993 , vol. 84, # 1-4 p. 249 - 252

Til'kunova,N.A. et al.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1977 , vol. 26, p. 2214 - 2216
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1977 , vol. 26, p. 2381 - 2383