@article{DE_1966_2_4_a0,
     author = {E. F. Mishchenko and M. S. Nikol'skii},
     title = {A certain problem with a small parameter for parabolic differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {439--452},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1966_2_4_a0/}
}