collection: 3_or_1author: Koumpis, Alexandros_or_Fyntikoglou, Vasileios_or_Theodonis, Ioannis_or_Karvouni, Aikaterini-Nina_or_Paraskevas, Michail_or_Spanoudakis, Konstantinos_or_Litinas, Nikostype: 203_or_4_or_109subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS