Ziefle, Martina [P:(DE-82)IDM00463] ; Schneider, Christoph [P:(DE-82)000461] ; Vallée, Dirk Heinrich August [P:(DE-82)IDM01704] ; Schnettler, Armin [P:(DE-82)000618] ; Krempels, Karl-Heinz [P:(DE-82)IDM01303] ; Jarke, Matthias [P:(DE-82)000725]