@article{TMF_2019_200_3_a7,
     author = {V. V. Borzov and E. V. Damaskinsky},
     title = {Local perturbation of the~discrete {Schr\"odinger} operator and a~generalized {Chebyshev} oscillator},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {494--506},
     publisher = {mathdoc},
     volume = {200},
     number = {3},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2019_200_3_a7/}
}