lang: elauthor: Papaioannou, Angelos_or_Kontogeorgis, Aristeidis_or_Fountzoula, Christina_or_Kroupis, Christos_or_Spyropoulos, Vasileios_or_Michalopoulos, Charilaos_or_Antoniadis, Ioannis_or_Lianos, Theodoros_or_Michalopoulos, Charilaos__ensubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_VI. HUMANITIES AND ARTS