@article{DE_1971_7_11_a11,
     author = {V. P. Anosov and P. E. Sobolevskii},
     title = {Coercive solvability of a boundary-value problem for a second-order elliptic equation in {Banach} {space.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2030--2044},
     publisher = {mathdoc},
     volume = {7},
     number = {11},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_11_a11/}
}