@article{DE_1981_17_5_a10,
     author = {V. M. Ivakin},
     title = {A modified {Dirichlet} problem for a degenerate elliptic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {866--872},
     publisher = {mathdoc},
     volume = {17},
     number = {5},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_5_a10/}
}