Zorenko, Y. [P:(DE-H253)PIP1009172] ; Gorbenko, V. [P:(DE-HGF)0] ; Voznyak, T. [P:(DE-H253)PIP1011332] ; Konstankevych, I. [P:(DE-HGF)0] ; Savchyn, V. [P:(DE-HGF)0] ; Batentschuk, M. [P:(DE-H253)PIP1009357] ; Winnacker, A. [P:(DE-HGF)0] ; Brabec, Ch. J. [P:(DE-HGF)0]