%0 Journal Article
%A V. S. Pekar
%T Perturbation theory for one-dimensional Schrodinger equations that can be used in a~region where the wave function is small
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1971
%P 440-444
%V 9
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1971_9_3_a13/
%G ru
%F TMF_1971_9_3_a13