subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_VI. HUMANITIES AND ARTS__enauthor: Papaioannou, Angelos_or_Nintos, Alexandros_or_Plageras, Panagiotis_or_Tsotsou, Georgia Eleni_or_Spyropoulos, Vasileioslang: el