@article{FAA_1999_33_3_a9,
     author = {V. A. Kondrat'ev and M. A. Shubin},
     title = {Discreteness of {Spectrum} {Conditions} for {Schr\"odinger} {Operators} on {Manifolds}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {85--87},
     publisher = {mathdoc},
     volume = {33},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1999_33_3_a9/}
}