Volume 9, Issue 1, 2008, Pages 129-136
A. El-Shahed; H. Ibrahim; M. Abd El-Naeim
Volume 9, Issue 1, 2008, Pages 137-146
H. Ibrahim; A. El-Shahed; M. Abd-El-Naeim
Volume 7, Issue 2, 2006, Pages 141-162
M. A. El-Naghy; A. El-Shahed; A. A. Fathy; S. A. Badri