%0 Journal Article %A S. B. Vakarchuk %T On approximation of functions of two variables by generalized polynomials %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1987 %P 77-78 %V 180 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1987_180_a39/ %G ru %F TM_1987_180_a39