%0 Journal Article %A K. K. Golovkin %T Approximation of functions of the class $W_p^l(\Omega)$ %J Informatics and Automation %D 1966 %P 50-56 %V 92 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1966_92_a3/ %G ru %F TRSPY_1966_92_a3