@article{DE_1988_24_9_a22,
     author = {G. A. Leonov},
     title = {A multidimensional analogue of a criterion for {Poincar\'e} orbital stability},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1637--1639},
     publisher = {mathdoc},
     volume = {24},
     number = {9},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_9_a22/}
}