Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1966_167_3_a6, author = {S. L. Sobolev}, title = {On the density of finite functions in $l_p^{(l)}$}, journal = {Doklady Akademii Nauk}, pages = {516--518}, publisher = {mathdoc}, volume = {167}, number = {3}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_167_3_a6/} }
S. L. Sobolev. On the density of finite functions in $l_p^{(l)}$. Doklady Akademii Nauk, Tome 167 (1966) no. 3, pp. 516-518. http://geodesic.mathdoc.fr/item/DAN_1966_167_3_a6/