%0 Journal Article
%A V. I. Burenkov
%A E. M. Popova
%T Improvement of extension operators by means of approximation operators that preserve boundary values
%J Informatics and Automation
%D 1986
%P 50-54
%V 173
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1986_173_a4/
%G ru
%F TRSPY_1986_173_a4