lang: elsubjectTerm: III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__enauthor: Grontas, Panagiotis_or_Leondaritis, George_or_Andrikopoulos, Nikolaos_or_Pagourtzis, Aristeidis_or_Kitsiouli, Eirini