@article{AA_1996_8_1_a2,
     author = {A. Ya. Gordon},
     title = {Eigenvalues of the one-dimensional {Schr\"odinger} operator that are located on its essential spectrum},
     journal = {Algebra i analiz},
     pages = {113--121},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1996_8_1_a2/}
}