collection: 3_or_1author: Zachos, Efstathios_or_Fylaktakidou, Konstantina_or_Pagourtzis, Aristeidis_or_Περιβολαρόπουλος, Λέανδρος__elsubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_III. ENGINEERING AND TECHNOLOGY