Volume 42.2, Issue 84, January 2000, Pages 213-222
Ashgan M. Sayed
Volume 42.2, Issue 84, January 2000, Pages 264-271
Ashgan M. Sayed
Volume 40.1, Issue 79, October 1998, Pages 61-72
R.S. Ibrahim; Ashgan M. Sayed; Azhar M. Abdel Aziz; A.M. Sayed
Volume 40.1, Issue 79, October 1998, Pages 73-82
Ashgan M. Sayed; R.S. Ibrahim; Azhar M. Abdel-Aziz; A.M. Sayed