Kolomeitsev, Alexander A.; Yagupolskij, Yurij L.; Gentzsch, Andreas, Phosphorus, Sulfur and Silicon and the Related Elements, 1994, vol. 92, # 1-4, p. 179 - 188
Kolomeitsev, Alexander A.; Yagupolskij, Yurij L.; Gentzsch, Andreas, Phosphorus, Sulfur and Silicon and the Related Elements, 1994, vol. 92, # 1-4, p. 179 - 188