@article{CMUC_1971__12_4_a4,
     author = {Demuth, Osvald},
     title = {{\CYRO}{\cyrb} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrm} {\cyru}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyri} {\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyrr}{\cyru}{\cyre}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrk}{\cyro}{\cyrn}{\cyrs}{\cyrt}{\cyrr}{\cyru}{\cyrk}{\cyrt}{\cyri}{\cyrv}{\cyrn}{\cyrery}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt} {\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrn}{\cyri}{\cyrch}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrishrt} {\cyrv}{\cyra}{\cyrr}{\cyri}{\cyra}{\cyrc}{\cyri}{\cyri}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {687--711},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {1971},
     mrnumber = {0294578},
     zbl = {0255.02032},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_4_a4/}
}