@article{DE_1968_4_1_a13,
     author = {G. N. Yakovlev},
     title = {A certain problem of {A.} {V.} {Bicadze} for degenerate elliptic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {147--150},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_1_a13/}
}