%0 Journal Article %A V. G. Boltyanskii %T Application of the theory of optimal processes to problems of approximation of functions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1961 %P 82-95 %V 60 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1961_60_a4/ %G ru %F TM_1961_60_a4