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Ananias Tomboulides, Professor Department of Mechanical Engineering Bacola and Sialvera, 50100 Kozani University of Western Macedonia (formerly part of Aristotle University of Thessaloniki) tel: (+30-24610) 56630 fax: (+30-24610) 56631 e-mail: ananiast@auth.gr, atompoulidis@uowm.gr |