subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESauthor: Plageras, Panagiotis_or_Karkalousos, Petros_or_Zachos, Efstathios_or_Spyropoulos, Vasileios_or_Pagourtzis, Aristeidis_or_Αντωνιάδης, Ιωάννης__ellang: el