Hersch, N. [P:(DE-Juel1)128815] ; Wolters, B. [P:(DE-Juel1)136955] ; Dreissen, G. [P:(DE-Juel1)129308] ; Springer, R. [P:(DE-Juel1)144199] ; Kirchgessner, N. [P:(DE-HGF)0] ; Merkel, R. [P:(DE-Juel1)128833] ; Hoffmann, B. [P:(DE-Juel1)128817]