Paul, N. [P:(DE-HGF)0] ; Paul, A. [P:(DE-HGF)0] ; Mattauch, S. [P:(DE-Juel1)130821] ; Müller-Buschbaum, P. [P:(DE-HGF)0] ; Böni, P. [P:(DE-HGF)0] ; Lux-Steiner, M. Ch. [P:(DE-HGF)0]