%0 Journal Article
%A O.H. Hald
%T Discrete Inverse Sturm-Liouville Problems. I. Uniqueness for Symmetric Potentials.
%J Numerische Mathematik
%D 1976
%P 249-256
%V 27
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1976__27_132450/
%F NUMA_1976__27_132450