@article{DAN_1962_144_4_a7,
     author = {V. G. Maz'ya},
     title = {The negative spectrum of the $n$-dimensional {Schr\"odinger} operator},
     journal = {Doklady Akademii Nauk},
     pages = {721--722},
     publisher = {mathdoc},
     volume = {144},
     number = {4},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_4_a7/}
}