Nifantyev, E. E.; Predvoditelev, D. A.; Malenkovskaya, M. A., Phosphorus, Sulfur and Silicon and the Related Elements, 1994, vol. 89, # 1-4, p. 199 - 203
Nifantyev, E. E.; Predvoditelev, D. A.; Malenkovskaya, M. A., Phosphorus, Sulfur and Silicon and the Related Elements, 1994, vol. 89, # 1-4, p. 199 - 203