%0 Journal Article %A V. V. Zhikov %T On density of smooth functions in Sobolev–Orlich spaces %J Zapiski Nauchnykh Seminarov POMI %D 2004 %P 67-81 %V 310 %U http://geodesic.mathdoc.fr/item/ZNSL_2004_310_a3/ %G ru %F ZNSL_2004_310_a3