%0 Journal Article %A M. K. Potapov %A S. K. Tankaeva %T On the structural characteristics of functions with a given order of best approximation by algebraic polynomials %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1994 %P 46-54 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1994_1_a10/ %G ru %F VMUMM_1994_1_a10