lang: eltype: 7subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__enauthor: Plageras, Panagiotis_or_Fountzoula, Christina_or_Zoi, Georgiou_or_Papaioannou, Angelos_or_Galanopoulou, Konstantina_or_Spyropoulos, Vasileios_or_Sapountzaki, Kalliopi_or_Lekka, Maria Eleni E