@article{DE_1994_30_5_a21,
     author = {Yu. V. Malyshev and V. P. Zakharov and E. V. Galegova},
     title = {The neutral manifold principle for finding a limit cycle},
     journal = {Differencialʹnye uravneni\^a},
     pages = {905--907},
     publisher = {mathdoc},
     volume = {30},
     number = {5},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_5_a21/}
}