%0 Journal Article
%A B. M. Levitan
%T Approximation of infinite-zone potentials by finite-zone potentials
%J Izvestiya. Mathematics 
%D 1983
%P 55-87
%V 20
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1983_20_1_a3/
%G en
%F IM2_1983_20_1_a3