@article{DE_1978_14_3_a5,
     author = {I. G. Egorov},
     title = {Stability in the large of the zero solution of a second order autonomous system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {442--450},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_3_a5/}
}