%0 Journal Article %A V. M. Tikhomirov %T A.\,N.~Kolmogorov and approximation theory %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1989 %P 101-152 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1989_44_1_a4/ %G en %F RM_1989_44_1_a4