Volume 33, Issue 1, 2013, Pages 47-63
Wagieh Elsaadawi; marwah kamal; M. El-Faramawi; N. Ziada
Volume 22, Issue 1, 2002, Pages 91-99
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Volume 21, Issue 1, 2001, Pages 103-114
Marwah Kamal-El-Din; Ahmed Refaat