Papagiannopoulos, Aristeidis [P:(DE-HGF)0] ; Zhao, Junpeng [P:(DE-HGF)0] ; Zhang, Guangzhao [P:(DE-HGF)0] ; Pispas, Stergios [P:(DE-HGF)0] ; Radulescu, Aurel [P:(DE-Juel1)130905]