author: Krestenitis, Ioannis_or_Triantafyllou, Vasileios_or_Katsaros, Panagiotis_or_Asimakopoulos, Georgios_or_Chytiris, Leonidastype: 104subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_V. LAW AND SOCIAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_III. ENGINEERING AND TECHNOLOGY