lang: elcollection: 3type: 7_or_1_or_110_or_108_or_112author: Stathis, Dimitrios_or_Toumpis, Stavros_or_Tsitsifli, Stavroula_or_Katsafados, PetrossubjectTerm: V. LAW AND SOCIAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES