@article{TMF_1972_12_2_a9,
     author = {A. P. Kochkin},
     title = {Quasibound states in a magnetic field and the field of an impurity. {Weak} magnetic fields and potentials of arbitrary strength},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {239--250},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1972_12_2_a9/}
}