subjectTerm: V. LAW AND SOCIAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_VI. HUMANITIES AND ARTS__enauthor: Kalligeros, Emmanouil_or_Kroupis, Christos_or_Spyropoulos, Vasileios_or_Vougioukas, Dimosthenis