@article{MP_1957_a13,
     author = {G. P. Kreitser and G. I. Tyurin},
     title = {{\CYRS}{\cyrf}{\cyre}{\cyrr}{\cyrery} {{\CYREREV}{\cyrishrt}{\cyrl}{\cyre}{\cyrr}{\cyra}} {\cyro}{\cyrr}{\cyrt}{\cyro}{\cyrc}{\cyre}{\cyrn}{\cyrt}{\cyrr}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro} {\cyrs}{\cyri}{\cyrm}{\cyrp}{\cyrl}{\cyre}{\cyrk}{\cyrs}{\cyra}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {187--194},
     publisher = {mathdoc},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1957_a13/}
}