Volume 36, Issue 4, December 2011, Pages 19-28
Ahmad Hatata; Ahmed Helal; Hesien El Dessouki; Magdi Mohamed Ali El-Saadawi; Mohammed Tantawy
Volume 30, Issue 4, December 2005, Pages 16-21
Samah M. El Safty; Hamdy A. Ashour; Hesien El Dessouki; Mohamed El Sawaf