%0 Journal Article %A A. A. Efimov %T Approximation of continuous functions by Riesz means %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1986 %P 67-70 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1986_6_a16/ %G ru %F VMUMM_1986_6_a16