type: 104_or_109subjectTerm: V. LAW AND SOCIAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCE_or_II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS_or_II. ΦΥΣΙΚΕΣ ΚΑΙ ΓΕΩΠΟΝΙΚΕΣ ΕΠΙΣΤΗΜΕΣ__elauthor: Kefalas, Petros_or_Koumpis, Alexandros