Lewandowski, H. [P:(DE-Juel1)129496] ; Berns, A.E. [P:(DE-Juel1)129438] ; Philipp, H. [P:(DE-Juel1)VDB2349] ; Klumpp, E. [P:(DE-Juel1)129484] ; Vereecken, H. [P:(DE-Juel1)129549] ; Meier, R.J. [P:(DE-Juel1)VDB78003]