@article{DE_1969_5_5_a10,
     author = {M. S. Nikol'skii},
     title = {A certain problem with a small parameter},
     journal = {Differencialʹnye uravneni\^a},
     pages = {890--897},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_5_a10/}
}