type: 207_or_108_or_999_or_6_or_109_or_110_or_112subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_V. LAW AND SOCIAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCESauthor: Chytiris, Leonidas_or_Kombiadou, Katerina_or_Vougioukas, Dimosthenis_or_Krestenitis, Ioannis_or_Makris, Christos_or_Karampas, Theofanis