Volume 13, Issue 1, January 2009, Pages 21-26
Mohamed El-Negeri; Mohamed Eltotongy; Maged Elshamy; AbdA. Elrefaei; Yasser Abdel Dayem; waleed Omar; Waleed Thabet
Volume 13, Issue 1, January 2009, Pages 33-40
Mohamed Eltotongy; Mohamed El-Negeri; Tarek Shokeir; Mohamed Fawzy; Abdel Megied Mashally