Schumacher, J. [P:(DE-HGF)0] ; Boltes, M. [P:(DE-Juel1)132064] ; Zilken, H. [P:(DE-Juel1)132305] ; Hermanns, M.-A. [P:(DE-Juel1)168253] ; Eckhardt, B. [P:(DE-HGF)0] ; Doering, C.R. [P:(DE-HGF)0]