type: 7author: Nikolopoulos, Dimitrios_or_Alissandrakis, Constantine_or_Kottou, Sofia_or_Toumpis, Stavros_or_Giannakopoulos, PanagiotissubjectTerm: V. LAW AND SOCIAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE