Weber, U. [P:(DE-HGF)0] ; Greuel, G. [P:(DE-HGF)0] ; Böttger, U. [P:(DE-HGF)0] ; Weber, S. [P:(DE-HGF)0] ; Hennings, D. [P:(DE-HGF)0] ; Waser, R. [P:(DE-Juel1)131022]