%0 Journal Article
%A Barry Simon
%T A new approach to inverse spectral theory. I: Fundamental formalism
%J Annals of mathematics
%D 1999
%V 150
%N 3
%U http://geodesic.mathdoc.fr/articles/10.2307/121061/
%R 10.2307/121061
%F 10_2307_121061