Volume 30, Issue 1, June 2007, Pages 23-37
Mohamed S. Afifi; Madiha A. Hassan; Zain-EL Abden M. Naeim; Weaam N. Elsayed
Volume 29, Issue 2, December 2006, Pages 432-445
Mohamed S. Karawya; Mohamed S. Afifi; Ahmed F. Halim; Saleh H. El-Sharkawy