Volume 64, Issue 158, July 2018
GERGES A.A.; MONA SOBHY; FATHI A.; HAMS MOHAMED; ABOU-GAZIA KH.A.; MOHAMED H.F.
Volume 51, Issue 107, October 2005, Pages 1-12
F.H. EL-SANGARY; IBTISAM M. GAMAL EL-DIN