@article{DE_1975_11_7_a18,
     author = {L. M. Gershtein and P. E. Sobolevskii},
     title = {Coercive solvability of general boundary value problems for second order elliptic differential equations in a {Banach} {space.~II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1335--1337},
     publisher = {mathdoc},
     volume = {11},
     number = {7},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_7_a18/}
}