Volume 2, A.S.A.T. CONFERENCE 21-23 April 1987 , CAIRO, April 1987, Pages 119-132
Ghazy M. R. Assassa; Mamdouh E. Abdel Ghany
Volume 2, A.S.A.T. CONFERENCE 21-23 April 1987 , CAIRO, April 1987, Pages 133-147
Ghazy M. R. Assassa; Mamdouh E. Abdel Ghany