Krämer-Flecken, A. [P:(DE-Juel1)130075] ; Huxhagen, K. [P:(DE-HGF)0] ; Larue, H. [P:(DE-HGF)0] ; Schalt, W. [P:(DE-Juel1)VDB5363] ; Waidmann, G. [P:(DE-Juel1)VDB5364]