Geodesic
The density of infinitely differentiable functions in Sobolev spaces for an arbitrary open set
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Investigations in the theory of differentiable functions of many variables and its applications. Part V, Tome 131 (1974), pp. 39-50 Cet article a éte moissonné depuis la source Math-Net.Ru

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@article{TM_1974_131_a4,
     author = {V. I. Burenkov},
     title = {The density of infinitely differentiable functions in {Sobolev} spaces for an arbitrary open set},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {39--50},
     year = {1974},
     volume = {131},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1974_131_a4/}
}
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TI  - The density of infinitely differentiable functions in Sobolev spaces for an arbitrary open set
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1974
SP  - 39
EP  - 50
VL  - 131
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ID  - TM_1974_131_a4
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%0 Journal Article
%A V. I. Burenkov
%T The density of infinitely differentiable functions in Sobolev spaces for an arbitrary open set
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1974
%P 39-50
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%U http://geodesic.mathdoc.fr/item/TM_1974_131_a4/
%G ru
%F TM_1974_131_a4
V. I. Burenkov. The density of infinitely differentiable functions in Sobolev spaces for an arbitrary open set. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Investigations in the theory of differentiable functions of many variables and its applications. Part V, Tome 131 (1974), pp. 39-50. http://geodesic.mathdoc.fr/item/TM_1974_131_a4/