Volume 21, Issue 1, January 2007, Pages 139-211
Gihan, S. Farahat; Ensaf, A. El Full; Mohamed, H. Abdel Fattah; Nabel, A. Hataba; Mohamed, A. Khalifa
Volume 20, Issue 2, July 2006, Pages 227-241
Gihan. S. Farahat; Ensaf. A. El Full; Mohamed H. Abdel Fattah; Nabel, A. Hataba; M. A. Khalifa