@article{DE_1978_14_3_a0,
     author = {Yu. P. Boglaev and A. V. Zhdanov and V. G. Stel'makh},
     title = {Uniform approximations to the solutions of certain singularly perturbed nonlinear equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {395--406},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_3_a0/}
}