%0 Journal Article
%A A. S. Kochurov
%T Direct and inverse theorems on approximation by piecewise polynomial functions
%J Fundamentalʹnaâ i prikladnaâ matematika
%D 2013
%P 129-144
%V 18
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FPM_2013_18_5_a6/
%G ru
%F FPM_2013_18_5_a6