Gaber, Abd El-Aal M.; Atalla, Ahmed A.; Kamal El-Dean, Adel M.
Phosphorus, Sulfur and Silicon and Related Elements, 1996 , vol. 112, # 1-4 p. 131 - 136
Gaber, Abd El-Aal M.; Atalla, Ahmed A.; Kamal El-Dean, Adel M.
Phosphorus, Sulfur and Silicon and Related Elements, 1996 , vol. 112, # 1-4 p. 131 - 136