collection: 2subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCEStype: 7author: Kranakis, Evangelos_or_Andrikopoulos, Nikolaos_or_Grontas, Panagiotis_or_Pagourtzis, Aristeidis_or_Κοντογεώργης, Αριστείδης__ellang: el