@article{PIM_1974_N_S_17_31_a19,
     author = {{\CYRYA}{\cyrn}{\cyre}{\cyrz} {\CYRU}{\cyrsh}{\cyra}{\cyrn}},
     title = {{\CYRO}{\cyrb} {\cyrt}{\cyro}{\cyrch}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrs} {\cyrk}{\cyro}{\cyrt}{\cyro}{\cyrr}{\cyro}{\cyri} {\cyro}{\cyrp}{\cyrr}{\cyre}{\cyrd}{\cyre}{\cyrl}{\cyrn}{\cyrsftsn}{\cyri} {\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}{\cyra} {\cyri} {\cyrp}{\cyro}{\cyrd}{\cyrs}{\cyrt}{\cyra}{\cyrn}{\cyro}{\cyrv}{\cyrk}{\cyri} {\cyrv} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyryu} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyrsftsn}{\cyri} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyro}{\cyrn}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrsftsn}{\cyri}{\cyrh} {\cyru}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyri}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {173 },
     publisher = {mathdoc},
     volume = {_N_S_17},
     number = {31},
     year = {1974},
     url = {http://geodesic.mathdoc.fr/item/PIM_1974_N_S_17_31_a19/}
}