Kallmayer, M. [P:(DE-HGF)0] ; Schneider, H. [P:(DE-HGF)0] ; Jakob, G. [P:(DE-HGF)0] ; Elmers, H. J. [P:(DE-HGF)0] ; Kroth, K. [P:(DE-HGF)0] ; Kandpal, H. C. [P:(DE-HGF)0] ; Stumm, U. [P:(DE-HGF)0] ; Cramm, S. [P:(DE-Juel1)130601]