Bechtel, A. [P:(DE-HGF)0] ; Gratzer, R. [P:(DE-HGF)0] ; Sachsenhofer, R. [P:(DE-HGF)0] ; Gusterhuber, J. [P:(DE-HGF)0] ; Lücke, A. [P:(DE-Juel1)129567] ; Püttmann, W. [P:(DE-HGF)0]