@article{10_21136_CMJ_1987_102129,
     author = {Koldunov, A. V.},
     title = {{\CYRO}{\cyrs}{\cyro}{\cyrb}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrs}{\cyrt}{\cyrr}{\cyro}{\cyre}{\cyrn}{\cyri}{\cyrya} $o$-{\cyrp}{\cyro}{\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyra}{\cyrr}{\cyrh}{\cyri}{\cyrm}{\cyre}{\cyrd}{\cyro}{\cyrv}{\cyro}{\cyrishrt} $\ell$-{\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}{\cyrery} {\cyrs} {\cyrs}{\cyri}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrishrt} {\cyre}{\cyrd}{\cyri}{\cyrn}{\cyri}{\cyrc}{\cyre}{\cyrishrt}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1--6},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1987},
     doi = {10.21136/CMJ.1987.102129},
     mrnumber = {875122},
     zbl = {0631.06008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102129/}
}