@article{10_21136_CMJ_1977_101489,
     author = {Rotkovi\v{c}, G. Ja.},
     title = {{\CYRO} {\cyrd}{\cyri}{\cyrz}{\cyrhrdsn}{\cyryu}{\cyrn}{\cyrk}{\cyrt}{\cyrn}{\cyro} {\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyrery}{\cyrh} {\cyra}{\cyrr}{\cyrh}{\cyri}{\cyrm}{\cyre}{\cyrd}{\cyro}{\cyrv}{\cyrery}{\cyrh} {\cyrp}{\cyro}{\cyrl}{\cyru}{\cyru}{\cyrp}{\cyro}{\cyrr}{\cyrya}{\cyrd}{\cyro}{\cyrch}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}{\cyra}{\cyrh}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {523--527},
     publisher = {mathdoc},
     volume = {27},
     number = {4},
     year = {1977},
     doi = {10.21136/CMJ.1977.101489},
     mrnumber = {0463073},
     zbl = {0389.06017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1977.101489/}
}