%0 Journal Article %A G. G. Magaril-Il'yaev %T On the approximations of Sobolev classes of functions onĀ $\boldsymbol R^n$ %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1987 %P 154-155 %V 180 %U http://geodesic.mathdoc.fr/item/TM_1987_180_a90/ %G ru %F TM_1987_180_a90