@article{DAN_1981_261_4_a12,
     author = {A. Kh. Shamilov},
     title = {On a problem for an elliptic equation and conditions for its solvability},
     journal = {Doklady Akademii Nauk},
     pages = {820--824},
     publisher = {mathdoc},
     volume = {261},
     number = {4},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_261_4_a12/}
}