%0 Journal Article
%A S. A. Agahanov
%A N. Sh. Zagirov
%T Approximation of the function sign x in the uniform and integral metrics by means of rational functions
%J Matematičeskie zametki
%D 1978
%P 825-838
%V 23
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1978_23_6_a4/
%G ru
%F MZM_1978_23_6_a4