author: Nikolopoulos, Stavros_or_Toumpis, Stavros_or_Zachos, Efstathios_or_Palios, Leonidas_or_Georgopoulos, Antonios_or_Pagourtzis, Aristeidis__ensubjectTerm: V. LAW AND SOCIAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE