Volume 20, Issue 1, March 2010, Pages 149-153
Samia I. Afifi
Volume 20, Issue 1, March 2010, Pages 253-259
A. M. Youssif
Volume 20, Issue 1, March 2010, Pages 319-323
H. H. Emeash; M. A. El-Bably; Asmaa N. Mohammed