Volume 4, ASAT CONFLENCE 14-16 May 1991 , CAIRO, May 1991, Pages 89-98
N. H. MAHMOUD
Volume 3, ASAT Conference 4-6 April 1989 , CAIRO, April 1989, Pages 331-344
K. A. IBRAHIM; N. I. HEWEDY; N. H. MAHMOUD; H. SHAFIEK