@article{DE_1999_35_2_a2,
     author = {V. A. Il'in},
     title = {An estimate for the spectral function of a selfadjoint extension in $\mathbb R^N$ of the {Schr\"odinger} operator with a potential satisfying the strengthened {Stummel} condition},
     journal = {Differencialʹnye uravneni\^a},
     pages = {188--199},
     publisher = {mathdoc},
     volume = {35},
     number = {2},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_2_a2/}
}