@article{DAN_1963_149_1_a9,
     author = {S. L. Sobolev},
     title = {The density of compactly supported functions in the space $L_p^{(m)}(E_n)$},
     journal = {Doklady Akademii Nauk},
     pages = {40--43},
     publisher = {mathdoc},
     volume = {149},
     number = {1},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_1_a9/}
}