@misc{10_21136_CMJ_1955_100172,
     title = {{\CYRS}{\cyro}{\cyro}{\cyrb}{\cyrshch}{\cyre}{\cyrn}{\cyri}{\cyrya}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {573--576},
     year = {1955},
     volume = {5},
     number = {4},
     doi = {10.21136/CMJ.1955.100172},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1955.100172/}
}