Papagiannopoulos, A. [P:(DE-HGF)0] ; Karayianni, M. [P:(DE-HGF)0] ; Mountrichas, G. [P:(DE-HGF)0] ; Pispas, S. [P:(DE-HGF)0] ; Radulescu, A. [P:(DE-Juel1)VDB4342]