Bessas, D. [P:(DE-Juel1)VDB90858] ; Klobes, B. [P:(DE-Juel1)144500] ; Töllner, W. [P:(DE-HGF)0] ; Sergueev, I. [P:(DE-HGF)0] ; Nielsch, K. [P:(DE-HGF)0] ; Hermann, R. [P:(DE-Juel1)130706]