subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESauthor: Bratsos, Athanasios_or_Cheliotis, Dimitrios_or_Kranakis, Evangelos_or_Pagourtzis, Aristeidis_or_Promponas, Antonios_or_Daikos, Georgios__enlang: el