Cesa, C. M. [P:(DE-Juel1)VDB57503] ; Hoffmann, B. [P:(DE-Juel1)VDB27696] ; Kirchgessner, N. [P:(DE-Juel1)VDB3188] ; Schwarz, U. [P:(DE-HGF)0] ; Merkel, R. [P:(DE-Juel1)128833]