author: Grontas, Panagiotis_or_Cheliotis, Dimitrios_or_Souliou, Theodora_or_Pagourtzis, Aristeidis_or_Pagourtzis, Aristeidis__ensubjectTerm: III. ENGINEERING AND TECHNOLOGY_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE