Krasyuk, A. [P:(DE-HGF)0] ; Nepijko, S. A. [P:(DE-HGF)0] ; Oelsner, A. [P:(DE-HGF)0] ; Schneider, C. M. [P:(DE-Juel1)130948] ; Elmers, H. J. [P:(DE-HGF)0] ; Schönhense, G. [P:(DE-HGF)0]