@article{MP_1957_2_1_a21,
     author = {L. Tclaf},
     title = {{\CYRO}{\cyrb}{\cyrhrdsn}{\cyre}{\cyrd}{\cyri}{\cyrn}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrishrt} {\cyrn}{\cyra}{\cyru}{\cyrch}{\cyrn}{\cyro}-{\cyrm}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrishrt} {\cyrs}{\cyre}{\cyrm}{\cyri}{\cyrn}{\cyra}{\cyrr} {\cyrk}{\cyra}{\cyrf}{\cyre}{\cyrd}{\cyrr} {\cyrv}{\cyrery}{\cyrs}{\cyrsh}{\cyre}{\cyrishrt} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrk}{\cyri} {\cyrm}{\cyro}{\cyrs}{\cyrk}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrv}{\cyrt}{\cyru}{\cyrz}{\cyro}{\cyrv}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {183--186},
     year = {1957},
     volume = {Ser. 2, 1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1957_2_1_a21/}
}