@article{DE_1988_24_2_a20,
     author = {V. F. Butuzov and A. G. Nikitin},
     title = {An angular boundary layer in the asymptotics of the solution of a singularly perturbed system of equations of elliptic type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {343--345},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_2_a20/}
}