author: Fountzoula, Christina_or_Plageras, Panagiotis_or_Tsotsou, Georgia Eleni_or_Spyropoulos, Vasileios_or_Aggelopoulos, Eleftherios_or_Georgopoulos, Antonios_or_Ψειρίδου, Αναστασία__elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_V. LAW AND SOCIAL SCIENCES