@article{DE_1968_4_4_a8,
     author = {V. B. Uvarov},
     title = {Asymptotic properties of the solutions of linear differential equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {659--663},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_4_a8/}
}