subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__enauthor: Plageras, Panagiotis_or_Spyropoulos, Vasileios_or_Nintos, Alexandros_or_Achilias, Dimitris_or_Ntziachristos, Leonidas_or_Alissandrakis, Constantinelang: el