%0 Journal Article
%A B. M. Levitan
%A M. G. Gasymov
%T Determination of a~differential equation by two of its spectra
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1964
%P 1-63
%V 19
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1964_19_2_a0/
%G en
%F RM_1964_19_2_a0