TY  - JOUR
AU  - Barry Simon
TI  - A new approach to inverse spectral theory. I: Fundamental formalism
JO  - Annals of mathematics
PY  - 1999
VL  - 150
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.2307/121061/
DO  - 10.2307/121061
ID  - 10_2307_121061
ER  -