@article{01423420,
title = {A new approach to inverse spectral theory. I: Fundamental formalism.},
journal = {Annals of Mathematics. Second Series},
volume = {150},
year = {1999},
pages = {1029-1057},
doi = {10.2307/121061},
zbl = {0945.34013},
language = {en},
url = {http://dml.mathdoc.fr/item/01423420}
}
Simon, Barry. A new approach to inverse spectral theory. I: Fundamental formalism.. Annals of Mathematics. Second Series, Tome 150 (1999) pp. 1029-1057. doi : 10.2307/121061. http://gdmltest.u-ga.fr/item/01423420/