Völker, H. [P:(DE-82)103560] ; Sigmund, M. [P:(DE-82)015156] ; Desch, U. [P:(DE-82)122352] ; Silny, J. [P:(DE-82)024456] ; Schöndube, Friedrich [P:(DE-82)025357] ; Hanrath, Peter [P:(DE-82)005411]