Volume 28.2, Issue 56, January 1993, Pages 71-89
H.A. DAGHASH; M.N. ABD EL-ATI; M.N. ABD EL-SALAM
Volume 26.1, Issue 51, October 1991, Pages 98-107
M.M. SHETAEWI; H.A. DAGHASH; M.N. ABD EL-SALAM; T.S. ABD EL-ALL