@article{DE_1985_21_10_a16,
     author = {V. F. Butuzov and A. V. Nesterov},
     title = {A singularly perturbed boundary value problem of elliptic type with nonsmooth angular boundary layer functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1751--1755},
     publisher = {mathdoc},
     volume = {21},
     number = {10},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_10_a16/}
}