Volume 17, Issue 2, March 2007, Pages 21-24
Nahed I.M.M. Khamis; Zeinab M. Souror; Hanan N. Ibrahim; S. M. Aboul Saoud
Volume 15, Issue 2, March 2005, Pages 177-179
S. S. Salama; S. M. Shafei; Elham A. El-Ebiary