Volume 34, Issue 2, 2011, Pages 149-158
Salah Abdel-Muttalib Abdel-Aziz; Mostafa Ahmad Hussein; Ihab Talat Abdel-Raheem
Volume 33, Issue 2, 2010, Pages 169-177
Omar Mahmoud Mohamed Mohafez; Ihab Talat Abdel-Raheem; Alaa Mohamed Nafady