author: Karkalousos, Petros_or_Kroupis, Christos_or_Spyropoulos, Vasileios_or_Cheliotis, Dimitrios_or_Παγουρτζής, Αριστείδης__elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES