Schafer, K. [P:(DE-HGF)0] ; Böttcher, J. [P:(DE-HGF)0] ; Weymann, D. [P:(DE-Juel1)VDB108056] ; von der Heide, C [P:(DE-HGF)0] ; Duijnisveld, W.H.M. [P:(DE-HGF)0]