Geodesic
The Negative Spectrum of a Class of Two-Dimensional Schr\"odinger Operators with Potentials Depending Only on Radius
Funkcionalʹnyj analiz i ego priloženiâ, Tome 34 (2000) no. 4, pp. 85-87.

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A. Laptev. The Negative Spectrum of a Class of Two-Dimensional Schr\"odinger Operators with Potentials Depending Only on Radius. Funkcionalʹnyj analiz i ego priloženiâ, Tome 34 (2000) no. 4, pp. 85-87. http://geodesic.mathdoc.fr/item/FAA_2000_34_4_a9/

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