@article{MP_2001_a9,
     author = {F. S. Duzhin},
     title = {{\CYRS}{\cyrk}{\cyro}{\cyrl}{\cyrsftsn}{\cyrk}{\cyro} {\cyre}{\cyrs}{\cyrt}{\cyrsftsn} {\cyrp}{\cyre}{\cyrr}{\cyri}{\cyro}{\cyrd}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrt}{\cyrr}{\cyra}{\cyre}{\cyrk}{\cyrt}{\cyro}{\cyrr}{\cyri}{\cyrishrt} {\cyru}~{\cyrt}{\cyrr}{\cyre}{\cyrh}{\cyrm}{\cyre}{\cyrr}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrb}{\cyri}{\cyrl}{\cyrl}{\cyri}{\cyra}{\cyrr}{\cyrd}{\cyra}{\cyrh}?},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {136},
     publisher = {mathdoc},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2001_a9/}
}