Baumer, D. [P:(DE-HGF)0] ; Brunner, E. [P:(DE-HGF)0] ; Blümler, P. [P:(DE-Juel1)VDB49819] ; Zänker, D. G. [P:(DE-HGF)0] ; Spies, H. W. [P:(DE-HGF)0]