Prechtel, K. [P:(DE-HGF)0] ; Bausch, A. R. [P:(DE-HGF)0] ; Marchi-Artzner, V. [P:(DE-HGF)0] ; Kantlehner, M. [P:(DE-HGF)0] ; Kessler, H. [P:(DE-HGF)0] ; Merkel, R. [P:(DE-Juel1)128833]