Volume 34.1, Issue 67, October 1995, Pages 96-108
NAGLA ABD EL MONEM; S.H. AFIFI; T.A.EL. ALLWAY; Sh.M. AHMED
Volume 32.2, Issue 64, January 1995, Pages 88-95
SEHAM, M. ALY; M.A. MOHAMMED
Volume 32.1, Issue 63, October 1994, Pages 103-110
A.A. ABOU EL ELA