type: 7lang: elsubjectTerm: III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCEauthor: Gitzenis, Savvas_or_Gounaris, Anastasios_or_Toumpis, Stavros_or_Manolopoulos, Ioannis_or_Mavridis, Ioannis