@article{DE_1976_12_7_a13,
     author = {I. I. Matveeva},
     title = {The first boundary value problem for degenerate elliptic equations in a half-space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1267--1281},
     publisher = {mathdoc},
     volume = {12},
     number = {7},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_7_a13/}
}