Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1967_3_12_a17, author = {K. S. Sibirskii}, title = {Dynamical systems close to {Hamiltonian} ones}, journal = {Differencialʹnye uravneni\^a}, pages = {2177--2178}, publisher = {mathdoc}, volume = {3}, number = {12}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1967_3_12_a17/} }
K. S. Sibirskii. Dynamical systems close to Hamiltonian ones. Differencialʹnye uravneniâ, Tome 3 (1967) no. 12, pp. 2177-2178. http://geodesic.mathdoc.fr/item/DE_1967_3_12_a17/