type: 7_or_109_or_106author: Pagourtzis, Aristeidis_or_Toumpis, Stavros_or_Cheliotis, Dimitrios_or_Bratsos, AthanasiossubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_V. ΔΙΚΑΙΟ ΚΑΙ ΚΟΙΝΩΝΙΚΕΣ ΕΠΙΣΤΗΜΕΣ__el