@article{DAN_1976_229_6_a4,
     author = {R. Ya. Doktorskii},
     title = {On the approximation of solutions of well-posed problems in unbounded domains for elliptic pseudodifferential operators},
     journal = {Doklady Akademii Nauk},
     pages = {1303--1305},
     publisher = {mathdoc},
     volume = {229},
     number = {6},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_229_6_a4/}
}