@article{SM_1984_49_1_a11,
     author = {A. L. Skubachevskii},
     title = {Nonlocal elliptic problems with a~parameter},
     journal = {Sbornik. Mathematics},
     pages = {197--206},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1984_49_1_a11/}
}