%0 Journal Article
%A Yu. A. Brudnyi
%A I. E. Gopengauz
%T Approximation by piecewise polynomial functions
%J Doklady Akademii Nauk
%D 1961
%P 1283-1286
%V 141
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_141_6_a0/
%G ru
%F DAN_1961_141_6_a0