subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES__enauthor: Pagourtzis, Aristeidis_or_Zachos, Efstathios_or_Georgiadis, Loukas_or_Mavridis, Ioannis_or_Spyropoulos, Vasileios