type: 109_or_110_or_112author: Koumpis, Alexandros_or_Fylaktakidou, Konstantina_or_Komineas, Stavros_or_Liaperdos, Ioannis_or_Chytiris, Leonidas_or_Michalopoulos, CharilaossubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_V. LAW AND SOCIAL SCIENCES