@article{DE_1977_13_7_a3,
     author = {V. S. Medvedev},
     title = {A study of the behavior of cascade trajectories in the neighborhood of an invariant set},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1192--1201},
     publisher = {mathdoc},
     volume = {13},
     number = {7},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_7_a3/}
}