%0 Journal Article %A Yu. V. Kuznetsov %T On the question of the density of infinitely differentiable functions in Besov spaces %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1984 %P 203-212 %V 170 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1984_170_a13/ %G ru %F TM_1984_170_a13