Bachhofer, H. [P:(DE-HGF)0] ; Reisinger, H. [P:(DE-HGF)0] ; Steinlesberger, G. [P:(DE-HGF)0] ; Nagel, W. E. [P:(DE-HGF)0] ; Cerva, H. [P:(DE-HGF)0] ; von Philipsborn, H. [P:(DE-HGF)0] ; Schroeder, H. [P:(DE-Juel1)VDB3130] ; Waser, R. [P:(DE-Juel1)131022]