%0 Journal Article %A V. G. Maz'ya %T Extension of functions from Sobolev spaces %J Zapiski Nauchnykh Seminarov POMI %D 1981 %P 231-236 %V 113 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1981_113_a15/ %G ru %F ZNSL_1981_113_a15