Volume 57, Issue 130, July 2011, Pages 1-17
G.A. TAHER; G.M. SAYED
Volume 56, Issue 125, April 2010, Pages 1-18
O.M. MAHRAN; G.A. TAHER
Volume 54, Issue 117, April 2008, Pages 290-301
G.A. TAHER; O.M. MAHRAN