@article{10_21136_CMJ_1973_101192,
     author = {Muszy\'nski, Jerzy},
     title = {{\CYRP}{\cyro}{\cyrv}{\cyre}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrishrt} {\cyrn}{\cyre}{\cyrk}{\cyro}{\cyrt}{\cyro}{\cyrr}{\cyro}{\cyrishrt} {\cyrs}{\cyrm}{\cyre}{\cyrsh}{\cyra}{\cyrn}{\cyrn}{\cyro}{\cyrishrt} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {\cyrs} {\cyrn}{\cyre}{\cyrl}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyrery}{\cyrm}{\cyri} {\cyrg}{\cyrr}{\cyra}{\cyrn}{\cyri}{\cyrch}{\cyrn}{\cyrery}{\cyrm}{\cyri} {\cyru}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyrya}{\cyrm}{\cyri}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {500--508},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {1973},
     doi = {10.21136/CMJ.1973.101192},
     mrnumber = {0318644},
     zbl = {0282.35058},
     language = {ru},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1973.101192/}
}