Brammer, T. [P:(DE-HGF)0] ; Reetz, W. [P:(DE-HGF)0] ; Senoussaoui, N. [P:(DE-HGF)0] ; Vetterl, O. [P:(DE-HGF)0] ; Kluth, O. [P:(DE-HGF)0] ; Rech, B. [P:(DE-HGF)0] ; Stiebig, H. [P:(DE-Juel1)VDB5910] ; Wagner, H. [P:(DE-Juel1)VDB5911]