collection: 2author: Economou, Polychronis_or_Kontogeorgis, Aristides_or_Lianos, Theodoros_or_Theochari Apostolidou, Theodora_or_Antoniadis, Ioannis_or_Pagourtzis, Aristeidis__ensubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_V. LAW AND SOCIAL SCIENCES