Volume 27.2, Issue 54, July 1992, Pages 42-55
M.E. ABDEL-MONIEM
Volume 26.1, Issue 51, October 1991, Pages 25-33
L.A. IBRAHIM; A.A. MANSOUR; K.E.H. ABDALLA; M.E. ABDEL-MONIEM; M.A. ALAM EL-DIN