@article{CMUC_1973__14_1_a1,
     author = {Demuth, Osvald},
     title = {{\CYRO} {\cyrp}pe{\cyrd}c{\cyrt}{\cyra}{\cyrv}{\cyri}{\cyrm}oc{\cyrt}{\cyri} pa{\cyrv}{\cyrn}{\cyro}{\cyrm}{\cyre}{\cyrr}{\cyrn}{\cyro} {\cyrn}{\cyre}{\cyrp}{\cyrr}{\cyre}{\cyrr}{\cyrery}{\cyrv}{\cyrn}{\cyrery}{\cyrh} {\cyrk}{\cyro}{\cyrn}{\cyrs}{\cyrt}{\cyrr}{\cyru}{\cyrk}{\cyrt}{\cyri}{\cyrv}{\cyrn}{\cyrery}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {7--25},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {1973},
     mrnumber = {0337533},
     zbl = {0264.02033},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1973__14_1_a1/}
}