@article{SM_1976_29_3_a6,
     author = {Yu. A. Dubinskii},
     title = {Nontriviality of {Sobolev} spaces of infinite order for a~full {Euclidean} space and a~torus},
     journal = {Sbornik. Mathematics},
     pages = {393--401},
     year = {1976},
     volume = {29},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1976_29_3_a6/}
}