Vorwerk, S. [P:(DE-HGF)0] ; Biernacki, S. [P:(DE-HGF)0] ; Hillebrand, H. [P:(DE-HGF)0] ; Janzik, I. [P:(DE-Juel1)129338] ; Müller, A. [P:(DE-HGF)0] ; Weiler, E. W. [P:(DE-HGF)0] ; Piotrowski, M. [P:(DE-HGF)0]