@article{01716061,
title = {Denseness of domains of differential operators in Sobolev spaces.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2002},
year = {2002},
zbl = {1001.46017},
language = {en},
url = {http://dml.mathdoc.fr/item/01716061}
}
Yakubov, Sasun. Denseness of domains of differential operators in Sobolev spaces.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2002 (2002) . http://gdmltest.u-ga.fr/item/01716061/