Volume 47.1, Issue 93, April 2002, Pages 175-184
A.M. El-Gaml; El-Sayed M. El.; A.M. Moustafa
Volume 45.1, Issue 89, April 2001, Pages 132-143
A.M. El-Gaml; M. El- Hashem; M. Hatab
Volume 41.2, Issue 82, July 1999, Pages 162-172
A.M. El-Gaml; R.S. El-Gmiey; M.A. Ahmed; Hatab M.