Volume 36, Issue 4, October 2013, Pages 347-356
Ekramy Saad; R. A. Amer; G. A. Morsy
Volume 36, Issue 4, October 2013, Pages 357-366
R. A. Amer; G. A. Morsy; Ekramy Saad
Volume 32, Issue 2, April 2009, Pages 189-199
Ekramy Saad; H. Shaaban; G.A. Morsy