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@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/} }
V. G. Maz'ya. The negative spectrum of the $n$-dimensional Schr\"odinger operator. Doklady Akademii Nauk, Tome 144 (1962) no. 4, pp. 721-722. http://geodesic.mathdoc.fr/item/DAN_1962_144_4_a7/