%0 Journal Article
%A A. V. Osipov
%T The hyperbolicity of a basic family for Levinson's equation
%J Differencialʹnye uravneniâ
%D 1975
%P 1795-1800
%V 11
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1975_11_10_a8/
%G ru
%F DE_1975_11_10_a8