subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_I. MATHEMATICS AND COMPUTER SCIENCEauthor: Spyropoulos, Vasileios_or_Cheliotis, Dimitrios_or_Mavridis, Ioannis_or_Promponas, Antonios_or_������������������������, ��������������������__el