Abdou, Wafaa M.; Ganoub, Neven A. F.; Abdel-Rahman, Naglaa M., Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 61, # 12, p. 91 - 96
Abdou, Wafaa M.; Ganoub, Neven A. F.; Abdel-Rahman, Naglaa M., Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 61, # 12, p. 91 - 96