@article{DE_1987_23_9_a21,
     author = {A. V. Kostin},
     title = {Asymptotic expansions of the vanishing and bounded solutions of ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1629--1632},
     publisher = {mathdoc},
     volume = {23},
     number = {9},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_9_a21/}
}