subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGYauthor: Karkalousos, Petros_or_Spyropoulos, Vasileios_or_Kiziroglou, Michail_or_Grontas, Panagiotis_or_Pagourtzis, Aristeidis_or_Παγουρτζής, Αριστείδης__ellang: el