%0 Journal Article %A Sadulla Z. Jafarov %T S. M. Nikolskii Type Inequality and Estimation between the Best Approximations of a Function in Norms of Different Spaces %J Mathematica balkanica %D 2007 %P 173 %V 21 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2007_21_1-2_a13/ %F MABA_2007_21_1-2_a13