subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESauthor: Cheliotis, Dimitrios_or_Kranakis, Evangelos_or_Souliou, Theodora_or_Grontas, Panagiotis_or_Zachos, Efstathios_or_Pagourtzis, Aristeidis_or_Spyropoulos, Vasileios__enlang: el