@article{SM_1986_53_2_a15,
     author = {M. Ya. Spiridonov},
     title = {Approximation of solutions of elliptic problems in domains with noncompact boundaries by solutions of exterior or interior problems},
     journal = {Sbornik. Mathematics},
     pages = {551--561},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1986_53_2_a15/}
}