Roschek, T. [P:(DE-Juel1)VDB5948] ; Repmann, T. [P:(DE-Juel1)VDB5981] ; Müller, J. [P:(DE-Juel1)VDB2892] ; Rech, B. [P:(DE-Juel1)VDB5941] ; Wagner, H. [P:(DE-Juel1)VDB5911]