Kruteva, Margarita [P:(DE-Juel1)130777] ; Allgaier, Jürgen [P:(DE-HGF)0] ; Monkenbusch, Michael [P:(DE-Juel1)130849] ; Hoffmann, Ingo [P:(DE-HGF)0] ; Richter, Dieter [P:(DE-Juel1)130917]