@article{DAN_1964_157_4_a11,
     author = {Ya. A. Roitberg},
     title = {Elliptic problems with non-homogeneous boundary conditions and local increase of smoothness of generalized solutions up to the boundary},
     journal = {Doklady Akademii Nauk},
     pages = {798--801},
     publisher = {mathdoc},
     volume = {157},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_4_a11/}
}