Cho, Deok-Yong [P:(DE-HGF)0] ; Valov, Ilia [P:(DE-Juel1)131014] ; van den Hurk, Jan [P:(DE-HGF)0] ; Tappertzhofen, Stefan [P:(DE-HGF)0] ; Waser, R. [P:(DE-Juel1)131022]