%0 Journal Article %A B. Kh. Sendov %A V. A. Popov %T The exact asymptotic behavior of the best approximation by algebraic and trigonometric polynomials in the Hausdorff metric %J Sbornik. Mathematics %D 1972 %P 139-149 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1972_18_1_a8/ %G en %F SM_1972_18_1_a8