@article{DE_1982_18_2_a15,
     author = {V. M. Ivakin},
     title = {A modified {Dirichlet} problem for equations and systems that are degenerate on the boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {319--324},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_2_a15/}
}