Portz, V. [P:(DE-Juel1)145975] ; Schnedler, M. [P:(DE-Juel1)143949] ; Eisele, H. [P:(DE-HGF)0] ; Dunin-Borkowski, Rafal [P:(DE-Juel1)144121] ; Ebert, Ph. [P:(DE-Juel1)130627]