type: 7author: Zachos, Efstathios_or_Nagopoulos, Nikolaos_or_Pagourtzis, Aristeidis_or_Pateras, Evangelos_or_Κοντογεώργης, Αριστείδης__elsubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES