@article{DE_1983_19_2_a15,
     author = {Yu. N. Bibikov},
     title = {Bifurcation of stable invariant tori from invariant tori of smaller dimensions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {354--357},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_2_a15/}
}