This author has not been identified. Look up 'Ali Maatouk' in GoogleThis author has not been identified. Look up 'Ersoy Caliskan' in GoogleThis author has not been identified. Look up 'Mutlu Koca' in GoogleThis author has not been identified. Look up 'Mohamad Assaad' in GoogleThis author has not been identified. Look up 'Guan Gui' in GoogleThis author has not been identified. Look up 'Hikmet Sari' in Google