Volume 32.2, Issue 64, January 1995, Pages 236-244
I.H. AHMED; M.A. AWAD; M. EL-MAHDY; H.M. GOHAR; A.M. GHANEM
Volume 14.1, Issue 27, January 1985, Pages 69-79
A. Y.A. MOHSEN; AIDA EL-DEBEGY; S. EL-NAKASHLY; M.M.H. EL-NIMR; M. EL-MAHDY