type: 7author: Achilias, Dimitris_or_Kontogeorgis, Aristeidis_or_Spyropoulos, Vasileios_or_Περιβολαρόπουλος, Λέανδρος__elsubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_III. ENGINEERING AND TECHNOLOGY