@article{DE_1982_18_6_a10,
     author = {L. V. Zilbergleit},
     title = {Asymptotic solutions of differential equations with analytic coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1014--1019},
     publisher = {mathdoc},
     volume = {18},
     number = {6},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_6_a10/}
}