collection: 2author: Spyropoulos, Vasileios_or_Nikolaidis, Nikolaos_or_Pagourtzis, Aristeidis_or_Ψειρίδου, Αναστασία__elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY