%0 Journal Article %A Yu. I. Volkov %T On approximation in the mean by multidimensional positive linear operators %J Informatics and Automation %D 1987 %P 85-86 %V 180 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a44/ %G ru %F TRSPY_1987_180_a44