%0 Journal Article %A V. I. Kolyada %T Imbedding theorems and inequalities in various metrics for best approximations %J Sbornik. Mathematics %D 1977 %P 171-189 %V 31 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1977_31_2_a3/ %G en %F SM_1977_31_2_a3