%0 Journal Article
%A M. M. Dzhrbashyan
%T Biorthogonal systems of rational functions and best approximation of the Cauchy kernel on the real axis
%J Sbornik. Mathematics
%D 1974
%P 409-433
%V 24
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1974_24_3_a4/
%G en
%F SM_1974_24_3_a4