Rubner, Wolfgang [P:(DE-Juel1)128837] ; Strobl, Dieter [P:(DE-Juel1)128883] ; Houben, S. [P:(DE-HGF)0] ; Kirchgeßner, N. [P:(DE-HGF)0] ; Merkel, Rudolf [P:(DE-Juel1)128833] ; Hoffmann, Bernd [P:(DE-Juel1)128817]