type: 7author: Pagourtzis, Aristeidis_or_Kontogiannis, Ioannis_or_Toumpis, Stavros_or_Vasileiadis, Nikolaos_or_Kefalas, Petros_or_Manis, GeorgiossubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_VI. HUMANITIES AND ARTS