subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_VI. HUMANITIES AND ARTS_or_I. ΜΑΘΗΜΑΤΙΚΑ ΚΑΙ ΠΛΗΡΟΦΟΡΙΚΗ__eltype: 7author: Pagourtzis, Aristeidis_or_Cheliotis, Dimitrios_or_Kontogiannis, Ioannis_or_Toumpis, Stavros_or_Bratsos, Athanasios_or_Michalopoulos, Andreas