Zhao, Li [P:(DE-Juel1)129950] ; Riensche, Ernst [P:(DE-Juel1)129912] ; Menzer, R. [P:(DE-Juel1)VDB1906] ; Blum, Ludger [P:(DE-Juel1)129828] ; Stolten, Detlef [P:(DE-Juel1)129928]