Volume 12.2, Issue 24, September 1984, Pages 217-226
A.A. FARRAG; I.A. SALEM; A. GOMAA; A.M. HAFEZ
Volume 11.1, Issue 21, June 1983, Pages 171-175
A.M. HAFEZ; H. IBRAHIM; A. GOMAA; A.A. FARRAG; I.A. SALEM
Volume 10.1, Issue 19, June 1982, Pages 67-73
F.F. EL-HOMMOSI; I.A. SALEM
Volume 6, Issue 11.12, January 1979, Pages 311-321
I.A. SALEM; F.A. SOLIMAN