Abdelaziz, Mahfouz A..; El-Sharabasy, Salwa A.; Gawad, Soad M. Abdel, Phosphorus, Sulfur and Silicon and the Related Elements, 1989, vol. 45, p. 231 - 236
Abdelaziz, Mahfouz A..; El-Sharabasy, Salwa A.; Gawad, Soad M. Abdel, Phosphorus, Sulfur and Silicon and the Related Elements, 1989, vol. 45, p. 231 - 236