@article{DE_1981_17_10_a8,
     author = {A. B. Vasil'eva and M. V. Faminskaya},
     title = {The critical case with a {Jordan} chain in a singularly perturbed nonlinear problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1806--1816},
     publisher = {mathdoc},
     volume = {17},
     number = {10},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_10_a8/}
}