Levushkina, V. S. [P:(DE-HGF)0] ; Mikhailin, Vitali [P:(DE-H253)PIP1010449] ; Spassky, Dmitry [P:(DE-H253)PIP1007371] ; Zadneprovski, B. I. [P:(DE-HGF)0] ; Tret’yakova, M. S. [P:(DE-HGF)0]