Schlummer, T. [P:(DE-Juel1)130142] ; Marchuk, O. [P:(DE-Juel1)5739] ; Bertschinger, G. [P:(DE-Juel1)129965] ; Biel, W. [P:(DE-Juel1)129967] ; Reiter, D. [P:(DE-Juel1)5006]