@article{DE_1999_35_5_a8,
     author = {V. B. Kolmanovskii and N. P. Kosareva},
     title = {On the asymptotic behavior of linear systems with variable parameters and with aftereffect},
     journal = {Differencialʹnye uravneni\^a},
     pages = {643--648},
     publisher = {mathdoc},
     volume = {35},
     number = {5},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_5_a8/}
}