Volume 28, Issue 1, June 2008, Pages 171-182
Azza Ismail; Shehab Kader; Soheir Abo EL Fadl; Nashwa El Tablawy
Volume 27, Issue 2, December 2007, Pages 1-14
Azza Ismail; Alsayed shanb; Soheir Abu El Fadl; Laila Rashed