Volume 39, Issue 3, September 2014, Pages 1-13
M. M. Ibrahim
Volume 38, Issue 1, March 2013, Pages 35-44
S. E. Mahgoub; M. M. Ibrahim
Volume 36, Issue 4, December 2011, Pages 28-38
M. Elshabrawy; M. H. Z. Ibrahim; O. Elbagalati