Zioutas, K. [P:(DE-HGF)0] ; Tsagri, M. [P:(DE-HGF)0] ; Semertzidis, Y. K. [P:(DE-HGF)0] ; Papaevangelou, T. [P:(DE-HGF)0] ; Hoffmann, D. H. H. [P:(DE-HGF)0] ; Anastassopoulos, V. [P:(DE-HGF)0]