Frerichs, H. [P:(DE-Juel1)6766] ; Effenberg, F. [P:(DE-Juel1)137057] ; Feng, Y. [P:(DE-Juel1)6982] ; Schmitz, O. [P:(DE-Juel1)6790] ; Stephey, L. [P:(DE-HGF)0] ; Reiter, D. [P:(DE-Juel1)5006] ; Börner, P. [P:(DE-HGF)0]