Gerstl, C. [P:(DE-Juel1)VDB79680] ; Schneider, G.J. [P:(DE-Juel1)VDB96975] ; Pyckhout-Hintzen, W. [P:(DE-Juel1)VDB4207] ; Allgaier, J. [P:(DE-Juel1)130501] ; Richter, D. [P:(DE-Juel1)130917] ; Huber, P. [P:(DE-HGF)0]