collection: 2subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGYauthor: Cheliotis, Dimitrios_or_Grontas, Panagiotis_or_Pagourtzis, Aristeidis_or_Makrylakis, Konstantinos__en