Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1967_3_2_a18, author = {A. R. Shakun}, title = {{\CYRN}{\cyro}{\cyrv}{\cyrery}{\cyre} {\cyrk}{\cyrn}{\cyri}{\cyrg}{\cyri}}, journal = {Differencialʹnye uravneni\^a}, pages = {354--355}, publisher = {mathdoc}, volume = {3}, number = {2}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1967_3_2_a18/} }
A. R. Shakun. Новые книги. Differencialʹnye uravneniâ, Tome 3 (1967) no. 2, pp. 354-355. http://geodesic.mathdoc.fr/item/DE_1967_3_2_a18/