@article{10_21136_CMJ_1958_100322,
     author = {Pt\'ak, Vlastimil},
     title = {{\CYRO}{\cyrb} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrishrt} {\cyrk}{\cyro}{\cyrm}{\cyrb}{\cyri}{\cyrn}{\cyra}{\cyrt}{\cyro}{\cyrr}{\cyrn}{\cyro}{\cyrishrt} {\cyrt}{\cyre}{\cyro}{\cyrr}{\cyre}{\cyrm}{\cyre} {\cyri} {\cyre}{\cyre} {\cyrp}{\cyrr}{\cyri}{\cyrm}{\cyre}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyrk} {\cyrn}{\cyre}{\cyro}{\cyrt}{\cyrr}{\cyri}{\cyrc}{\cyra}{\cyrt}{\cyre}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrm} {\cyrm}{\cyra}{\cyrt}{\cyrr}{\cyri}{\cyrc}{\cyra}{\cyrm}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {487--495},
     publisher = {mathdoc},
     volume = {08},
     number = {4},
     year = {1958},
     doi = {10.21136/CMJ.1958.100322},
     mrnumber = {0110644},
     zbl = {0082.24402},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1958.100322/}
}