Volume 38.1, Issue 75, October 1997, Pages 119-141
A.E ZAYED; H.A. DAGHASH; A. ABOU-ELMAGD; G.A. ABD EL-HAFIZ
Volume 10.1, Issue 19, June 1982, Pages 59-66
F.F. EL-HOMOSI; G.A. ABD EL-HAFIZ
Volume 9, Issue 17.18, January 1982, Pages 39-46
G.A. ABD EL-HAFIZ; F.F. EL-HOMMOSI
Volume 8, Issue 15.16, January 1981, Pages 51-59
F.F. EL-HOMMOSI; G.A. ABD EL-HAFIZ
Volume 7.1, Issue 13.14, January 1980, Pages 185-199
F.F. EL-HOMMOSI; G.A. ABD EL-HAFIZ