@article{MP_1957_2_1_a7,
     author = {Alexis Liapounoff and G. A. Shestopal},
     title = {{\CYRN}{\cyra}{\cyrch}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyre} {\cyrs}{\cyrv}{\cyre}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyro}~{\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch} {\cyrn}{\cyra} {\cyrerev}{\cyrl}{\cyre}{\cyrk}{\cyrt}{\cyrr}{\cyro}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrv}{\cyrery}{\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyri}{\cyrt}{\cyre}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyrm}{\cyra}{\cyrsh}{\cyri}{\cyrn}{\cyra}{\cyrh}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {57--74},
     year = {1957},
     volume = {Ser. 2, 1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1957_2_1_a7/}
}