Volume 45, Issue 2, December 2017, Pages 249-250
Abdel-Fattah El-Wakil; Amal Khalil
Volume 45, Issue 1, June 2017, Pages 173-187
Abdel-Fattah El-Wakil; Amal Khalil; Ibrahim El -Abbasi
Volume 44, Issue 1, June 2016, Pages 231-232
Abdel-Fattah El-Wakil; Amal Khalil