type: 999_or_207_or_108_or_6_or_109_or_110author: Katsafados, Petros_or_Krestenitis, Ioannis_or_Paraskevas, Michail_or_Fylaktakidou, KonstantinasubjectTerm: VI. HUMANITIES AND ARTS_or_III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES