Volume 38, Issue 1, March 2013, Pages 1-13
A. Helal; H. El Dessouki; A. Hatata; Magdi Mohamed Ali El-Saadawi; Mohamed Abd El-Moneim Mohamed Tantawy
Volume 29, Issue 3, September 2004, Pages 15-18
S. M. El Safty; H. El Dessouki; M. El Sawaf