subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_VI. HUMANITIES AND ARTS__enauthor: Plageras, Panagiotis_or_Spyropoulos, Vasileios_or_Makris, Christos_or_Karampas, Theofanis_or_Koutitas, Christoforos_or_Achilias, Dimitris