@article{DE_1970_6_1_a23,
     author = {V. N. Vragov},
     title = {The smoothness of solutions of the first boundary value problem for a degenerate elliptic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {209--212},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_1_a23/}
}