author: Spyropoulos, Vasileios_or_Kiziroglou, Michail_or_Zachos, Efstathios_or_Pagourtzis, Aristeidis_or_Psychogyiou, Mina__ensubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY