datepublished: 2015author: Zoi, Georgiou_or_Plageras, Panagiotis_or_Spyropoulos, Vasileios_or_Σπυρόπουλος, Βασίλειος__elcollection: 1lang: eltype: 1subjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES