author: Fountzoula, Christina_or_Spyropoulos, Vasileios_or_Σπυρόπουλος, Βασίλειος__eltype: 1collection: 1datepublished: 2015subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCESistemp: 1