Volume 32.2, Issue 64, January 1995, Pages 71-79
A.E. YASEEN; M.A. EL-HELOW; H.M. ABUL-DAHAB; G.S. AMIN
Volume 31.1, Issue 61, April 1994, Pages 37-55
H.M. A'BOUL—DAHAB; M.R. EL—HELW; A.E. YASEEN; GS. Amin