%0 Journal Article
%A Yu. A. Brudnyi
%A I. P. Irodova
%T Nonlinear spline approximation of functions of several variables and $B$-spaces
%J Algebra i analiz
%D 1992
%P 45-79
%V 4
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1992_4_4_a1/
%G ru
%F AA_1992_4_4_a1