@article{TMF_2004_138_1_a3,
     author = {R. R. Gadyl'shin},
     title = {Local {Perturbations} of the {Schr\"odinger} {Operator} on the {Plane}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {41--54},
     publisher = {mathdoc},
     volume = {138},
     number = {1},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2004_138_1_a3/}
}