Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1954__76_1_a3, author = {{\CYRN}.{\CYRF}. {\CYRO}{\cyrt}{\cyrr}{\cyro}{\cyrk}{\cyro}{\cyrv}}, title = {{\CYRO} {\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyre} {\cyrp}{\cyrr}{\cyre}{\cyrd}{\cyre}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyrc}{\cyri}{\cyrk}{\cyrl}{\cyro}{\cyrv} {\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrv} {\cyro}{\cyrk}{\cyrr}{\cyre}{\cyrs}{\cyrt}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyro}{\cyrs}{\cyro}{\cyrb}{\cyro}{\cyrishrt} {\cyrt}{\cyro}{\cyrch}{\cyrk}{\cyri}}, journal = {Matemati\v{c}eskij sbornik}, pages = {127--144}, publisher = {mathdoc}, volume = {76}, number = {1}, year = {1954}, zbl = {0059.08102}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1954__76_1_a3/} }
Н.Ф. Отроков. О числе предельных циклов дифференциального уравнения в окрестности особой точки. Matematičeskij sbornik, Tome 76 (1954) no. 1, pp. 127-144. http://geodesic.mathdoc.fr/item/MS_1954__76_1_a3/