%0 Journal Article
%A F. Peherstorfer
%A P. Yuditskii
%T Uniform approximation of $sgn(x)$ by rational functions with prescribed poles
%J Žurnal matematičeskoj fiziki, analiza, geometrii
%D 2007
%P 95-108
%V 3
%N 1
%U http://geodesic.mathdoc.fr/item/JMAG_2007_3_1_a5/
%G en
%F JMAG_2007_3_1_a5