datepublished: 2015author: Meletiou Christou, Maria Sonia_or_Thanos, Konstantinos_or_Georgiou, Kyriakos_or_Fountzoula, Christina_or_Spyropoulos, Vasileios_or_Σπυρόπουλος, Βασίλειος__elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_III. ENGINEERING AND TECHNOLOGY