subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_VI. HUMANITIES AND ARTS__enauthor: Alissandrakis, Constantine_or_Grontas, Panagiotis_or_Eleftheriadis, Ioannis_or_Andrikopoulos, Nikolaos_or_Pagourtzis, Aristeidis