Elmoghayar, Mohamed Rifaat Hamza; Abdalla, Sanaa Osman; Nasr, Mohamed Yousry Abdel-Samad
Journal of Heterocyclic Chemistry, 1984 , vol. 21, p. 781 - 784

Zayed, Salem E.; Aziz, Suzan Ibrahim; Erian, Ayman Wahba; Mohareb, Rafat Milad; Elmaged, Eiman I. Abou; et al.
Phosphorus, Sulfur and Silicon and the Related Elements, 1995 , vol. 102, # 1-4 p. 51 - 58

Elmoghayar, Mohamed Rifaat Hamza; Abdalla, Sanaa Osman; Nasr, Mohamed Yousry Abdel-Samad
Journal of Heterocyclic Chemistry, 1984 , vol. 21, p. 781 - 784

Erian, Ayman Wahba; Manhi, Fatma Mohamed; Zayed, Salem El-Gohary; Ali, Fatma Ahmed; Elnagdi, Mohamed Hilmy
Phosphorus, Sulfur and Silicon and Related Elements, 1998 , vol. 133, p. 127 - 139