Wendland, F. [P:(DE-Juel1)VDB4997] ; Bogena, H. R. [P:(DE-Juel1)129440] ; Gömann, H. [P:(DE-Juel1)VDB27819] ; Hake, J.-F. [P:(DE-Juel1)130461] ; Kreins, P. [P:(DE-Juel1)VDB27820] ; Kunkel, R. [P:(DE-Juel1)VDB4996]