author: Kalligeros, Emmanouil_or_Skianis, Charalampos_or_Toumpis, Stavros_or_Manis, Georgios_or_Giannakopoulos, PanagiotissubjectTerm: III. ENGINEERING AND TECHNOLOGY_or_V. LAW AND SOCIAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE