@article{TRSPY_1967_89_a8,
     author = {D. F. Kalinichenko},
     title = {On the density of functions in $C^\infty(\overline\Omega)$ in the weight space $W_{p,\sigma}^m(\Omega)$},
     journal = {Informatics and Automation},
     pages = {119--129},
     publisher = {mathdoc},
     volume = {89},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1967_89_a8/}
}