Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1967_2_1_a5, author = {G. G. Kazaryan}, title = {Density of smooth finitary functions in $\mathring{W}_p^r(\Omega)$}, journal = {Matemati\v{c}eskie zametki}, pages = {45--52}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1967_2_1_a5/} }
G. G. Kazaryan. Density of smooth finitary functions in $\mathring{W}_p^r(\Omega)$. Matematičeskie zametki, Tome 2 (1967) no. 1, pp. 45-52. http://geodesic.mathdoc.fr/item/MZM_1967_2_1_a5/