Volume 50, Issue 102, July 2004, Pages 64-71
H.H. Essa; N.H. Makar; Sohair Z. Hussein
Volume 50, Issue 100, January 2004, Pages 114-122
H.H. Essa; M.M. Ali; R.S. Refaie
Volume 49, Issue 99, October 2003, Pages 81-88
H.H. Essa; N.H. Makar
Volume 49, Issue 97, April 2003, Pages 204-210
H.H. Essa
Volume 47.2, Issue 94, July 2002, Pages 183-196
R.S. Refaie; H.H. Essa; M.M. Ali; Amal A. Mohammed