%0 Journal Article
%A A. L. Lukashov
%T Estimates for derivatives of rational functions and the fourth Zolotarev problem
%J Algebra i analiz
%D 2007
%P 122-130
%V 19
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_2007_19_2_a6/
%G ru
%F AA_2007_19_2_a6