Volume 34, Issue 2, 2011, Pages 131-140
Sonia T. Hassib; Naglaa M. El-Kousy; Al-Shimaa M. Alian
Volume 30, Issue 2, December 2007, Pages 241-258
Sonia T. Hassib; Ramzia El-Bagary; Hanaa M. Hashem; Maha M. El-Hakim