Berns, A.E. [P:(DE-Juel1)129438] ; Schnitzler, F. [P:(DE-Juel1)VDB36617] ; Drewes, N. [P:(DE-Juel1)VDB9226] ; Vereecken, H. [P:(DE-Juel1)129549] ; Burauel, P. [P:(DE-Juel1)VDB202]