Volume 7, Issue 1, May 2009, Pages 760-787
Yasser M Ghanem; Mohamed H. Naser; Ahemd H. Abdelkader; Ahemd Heybe
Volume 1, Issue 1, August 2003, Pages 681-689
M . E. ENANY; Y. ABD-EI GALIL,; H.M. YOUSSEF; A. M. E ASAWY