Bram, M. [P:(DE-Juel1)129591] ; Seifert, M. [P:(DE-HGF)0] ; Kot, A. [P:(DE-Juel1)151108] ; Wilkner, K. [P:(DE-Juel1)144726] ; Wulbieter, N. [P:(DE-HGF)0] ; Theisen, W. [P:(DE-HGF)0]