type: 7subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCEcollection: 2author: Kontogiannis, Ioannis_or_Symeonidis, Panagiotis_or_Gounaris, Anastasios_or_Toumpis, Stavros_or_Manolopoulos, Ioannis_or_Mavridis, Ioannis