Volume 54, Issue 118, July 2008, Pages 1-12
A.M.E. ASWAY; A.M. AHMED; H.M.H. SHALBY
Volume 38.1, Issue 75, October 1997, Pages 185-190
E.M. EL-SAYED; A.M. AHMED
Volume 25.2, Issue 50, July 1991, Pages 89-92
A.M. AHMED; S.S. SALLAM
Volume 25.2, Issue 50, July 1991, Pages 93-97
A.M. AHMED; S.S. SALLAM