type: 109_or_110_or_112author: Chytiris, Leonidas_or_Komineas, Stavros_or_Anninos, Loukas_or_Koumpis, Alexandros_or_Michalopoulos, CharilaossubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES