lang: elauthor: Grontas, Panagiotis_or_Laloumis, Dimitrios_or_Zachos, Efstathios_or_Krizanc, Danny_or_Lianos, Theodoros_or_Pagourtzis, Aristeidis_or_������������, ����������������__elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_V. LAW AND SOCIAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY