subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_V. LAW AND SOCIAL SCIENCES__enauthor: Pagourtzis, Aristeidis_or_Cheliotis, Dimitrios_or_Zachos, Efstathios_or_Beligiannis, Apostolos_or_Bratsos, Athanasios_or_Mavridis, Ioannis