%0 Journal Article
%A M. G. Pleshakov
%A S. V. Tyshkevich
%T One counterexample of shape-preserving approximation
%J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
%D 2014
%P 144-150
%V 14
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ISU_2014_14_2_a3/
%G ru
%F ISU_2014_14_2_a3