%0 Journal Article
%A Yu. N. Subbotin
%T Approximation by spline functions, and estimates of widths
%J Informatics and Automation
%D 1971
%P 35-60
%V 109
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1971_109_a3/
%G ru
%F TRSPY_1971_109_a3