%0 Journal Article %A V. N. Temlyakov %T On estimates of the best bilinear approximations of periodic functions and singular numbers of integral operators %J Informatics and Automation %D 1987 %P 213-214 %V 180 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a130/ %G ru %F TRSPY_1987_180_a130