%0 Journal Article
%A V. V. Arestov
%T The best approximation to a class of functions of several variables by another class and related extremum problems
%J Matematičeskie zametki
%D 1998
%P 323-340
%V 64
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1998_64_3_a0/
%G ru
%F MZM_1998_64_3_a0