subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES__enauthor: Tsotsou, Georgia Eleni_or_Cheliotis, Dimitrios_or_Pagourtzis, Aristeidis_or_Spyropoulos, Vasileioslang: el