lang: eltype: 7author: Toumpis, Stavros_or_Koutitas, Christoforos_or_Anninos, Loukas_or_Makris, Christos_or_Paraskevas, Michail_or_Triantafyllou, Vasileios_or_Chytiris, LeonidassubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_V. LAW AND SOCIAL SCIENCES