Vassen, Robert [P:(DE-Juel1)129670] ; Berger, L. [P:(DE-HGF)0] ; Vorkötter, Christoph [P:(DE-Juel1)191460] ; Kalfhaus, Tobias [P:(DE-Juel1)169478] ; Conze, S. [P:(DE-HGF)0]