Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1973_9_3_a21, author = {V. A. Dobrynskii and A. N. Sharkovskii}, title = {Orbit stability of trajectories}, journal = {Differencialʹnye uravneni\^a}, pages = {558--559}, publisher = {mathdoc}, volume = {9}, number = {3}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_3_a21/} }
V. A. Dobrynskii; A. N. Sharkovskii. Orbit stability of trajectories. Differencialʹnye uravneniâ, Tome 9 (1973) no. 3, pp. 558-559. http://geodesic.mathdoc.fr/item/DE_1973_9_3_a21/