@article{MP_1958_a20,
     author = {M. N. Shvets and S. N. Kiro},
     title = {{\CYRO}{\cyrd}{\cyre}{\cyrs}{\cyrs}{\cyra}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {234--238},
     publisher = {mathdoc},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1958_a20/}
}