Volume 27.1, Issue 53, April 1992, Pages 111-122
M.A. KOBEISY; E.M. IBRAHIM; M.M. SHETAEWI
Volume 8, Issue 15.16, January 1981, Pages 107-113
F.A. ABOUL-KHIER; T.A. EL-BASSIONY; A. SAIF; E.M. IBRAHIM