Volume 36.2, Issue 72, January 1997, Pages 87-93
A.I. EL-AZAB; M.A. EL-GALY; M. F. SASI; A.A. EL-MARIMI
Volume 36.1, Issue 71, October 1996, Pages 181-187
A.I. EL-AZAB; A.A. EL-MARIMI