Durner, W. [P:(DE-HGF)0] ; Scharnagl, B. [P:(DE-Juel1)VDB63507] ; Iden, S. C. [P:(DE-HGF)0] ; Weihermüller, L. [P:(DE-Juel1)VDB17057] ; Vereecken, H. [P:(DE-Juel1)129549]