Schmidt, L. [P:(DE-Juel1)VDB68283] ; Hummel, G. M. [P:(DE-Juel1)VDB67262] ; Schöttner, M. [P:(DE-HGF)0] ; Schurr, U. [P:(DE-Juel1)129402] ; Walter, A. [P:(DE-Juel1)VDB2595]