subjectTerm: III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__enauthor: Achilias, Dimitris_or_Kokolakis, Spyridon_or_Vougioukas, Dimosthenis_or_Ntziachristos, Leonidas_or_Mousiopoulos, Nikolaos