@article{10_4007_annals_2009_170_739,
     author = {Rowan Killip and Barry Simon},
     title = {Sum rules and spectral measures of {Schr\"odinger} operators with $L^2$ potentials},
     journal = {Annals of mathematics},
     pages = {739--782},
     publisher = {mathdoc},
     volume = {170},
     number = {2},
     year = {2009},
     doi = {10.4007/annals.2009.170.739},
     mrnumber = {2552106},
     zbl = {1185.34131},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2009.170.739/}
}