Volume 20, Issue 1, March 2010, Pages 319-323
H. H. Emeash; M. A. El-Bably; Asmaa N. Mohammed
Volume 17, Issue 2, March 2007, Pages 35-41
M. E Radwan; H. Z. Rateb
Volume 16, Issue 1, March 2006, Pages 70-74
H. Z. Rateb; M. E. Radwan