subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_VI. HUMANITIES AND ARTS__enauthor: Lekka, Maria Eleni E_or_Leondaritis, George_or_Chasapis, Dimitrios_or_Patsourakos, Spyros_or_Nikolaidis, Nikolaos_or_Ntziachristos, Leonidas_or_Alissandrakis, Constantine