%0 Journal Article
%A D. V. Valovik
%T On the integral characteristic function of the Sturm-Liouville problem
%J Sbornik. Mathematics
%D 2020
%P 1539-1550
%V 211
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2020_211_11_a1/
%G en
%F SM_2020_211_11_a1