%0 Journal Article %A V. P. Il'in %T Approximation of functions from $B^\ell_{p,\theta}(G)$ by anisotropic averages %J Zapiski Nauchnykh Seminarov POMI %D 1978 %P 30-47 %V 80 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1978_80_a1/ %G ru %F ZNSL_1978_80_a1