collection: 2subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCEauthor: Spyropoulos, Vasileios_or_Bratsos, Athanasios_or_Souliou, Theodora_or_Pagourtzis, Aristeidis_or_Κοντογεώργης, Αριστείδης__ellang: el