%0 Journal Article
%A S. M. Nikol'skii
%T Constructive representation of the zero-classes of differentiable functions of several variables
%J Doklady Akademii Nauk
%D 1966
%P 512-515
%V 170
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1966_170_3_a5/
%G ru
%F DAN_1966_170_3_a5