@article{DE_1978_14_9_a18,
     author = {O. V. Anashkin},
     title = {Asymptotic stability in nonlinear systems, and the critical case of $2m$ purely imaginary roots in the theory of the stability of motion},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1689--1691},
     publisher = {mathdoc},
     volume = {14},
     number = {9},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_9_a18/}
}