Biehl, Ralf [P:(DE-Juel1)130542] ; Stingaciu, Laura [P:(DE-Juel1)129542] ; Ivanova, Oxana [P:(DE-Juel1)136923] ; Ohl, Michael [P:(DE-Juel1)130872] ; Richter, Dieter [P:(DE-Juel1)130917]