Volume 16, Issue 1, May 1991, Pages 8-14
Mohamed El-Dessouky; Mahmoud A. El-komy; Ibrahim G. Rashed
Volume 14, Issue 1, June 1989, Pages 25-39
Mohamed M. El-Dessouky; Ibrahim Gar Al-Alm Rashed
Volume 10, Issue 2, December 1985, Pages 1-8
Ahmed N. Sharf El-Deen; Mohamed M. El-Dessouky; Ibrahim Rashed
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