Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1969_5_10_a19, author = {I. Z. Shtokalo and N. P. Erugin}, title = {{\CYRN}{\cyri}{\cyrk}{\cyro}{\cyrl}{\cyra}{\cyrishrt} {{\CYRN}{\cyri}{\cyrk}{\cyro}{\cyrl}{\cyra}{\cyre}{\cyrv}{\cyri}{\cyrch}} {{\CYRB}{\cyro}{\cyrg}{\cyro}{\cyrl}{\cyryu}{\cyrb}{\cyro}{\cyrv}} ({\cyrk}~60-{\cyrl}{\cyre}{\cyrt}{\cyri}{\cyryu} {\cyrs}{\cyro} {\cyrd}{\cyrn}{\cyrya} {\cyrr}{\cyro}{\cyrzh}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyrya})}, journal = {Differencialʹnye uravneni\^a}, pages = {1901--1908}, publisher = {mathdoc}, volume = {5}, number = {10}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1969_5_10_a19/} }
I. Z. Shtokalo; N. P. Erugin. Николай Николаевич Боголюбов (к~60-летию со дня рождения). Differencialʹnye uravneniâ, Tome 5 (1969) no. 10, pp. 1901-1908. http://geodesic.mathdoc.fr/item/DE_1969_5_10_a19/