Spindler, N. [P:(DE-Juel1)VDB70181] ; van Dusschoten, D. [P:(DE-Juel1)129425] ; Almstedt, R. [P:(DE-HGF)0] ; Ulbrich, A. [P:(DE-Juel1)VDB63395] ; Schneider, H. U. [P:(DE-Juel1)129397] ; Menzel, M. I. [P:(DE-Juel1)VDB63505]