subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCEcollection: 1_or_2author: Papaioannou, Angelos_or_Kroupis, Christos_or_Zoi, Georgiou_or_Plageras, Panagiotis_or_Spyropoulos, Vasileios_or_Σπυρόπουλος, Βασίλειος__ellang: el