Müller-Gärtner, H. W. [P:(DE-HGF)0] ; Müller, H. [P:(DE-HGF)0] ; Schmitt, G. [P:(DE-HGF)0] ; Vosberg, H. [P:(DE-HGF)0] ; Jungblut, R. [P:(DE-HGF)0] ; Langen, K. J. [P:(DE-Juel1)131777] ; Kürten, C. E. [P:(DE-HGF)0]