Nikolaev, Konstantin [P:(DE-Juel1)156348] ; Ermolenko, Yuri [P:(DE-HGF)0] ; Offenhäusser, Andreas [P:(DE-Juel1)128713] ; Ermakov, S. [P:(DE-HGF)0] ; Mourzina, Youlia [P:(DE-Juel1)128710]