Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1971_5_4_a16, author = {N. N. Nekhoroshev}, title = {Behavior of {Hamiltonian} systems close to integrable}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {82--83}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1971_5_4_a16/} }
N. N. Nekhoroshev. Behavior of Hamiltonian systems close to integrable. Funkcionalʹnyj analiz i ego priloženiâ, Tome 5 (1971) no. 4, pp. 82-83. http://geodesic.mathdoc.fr/item/FAA_1971_5_4_a16/