%0 Journal Article %A A. P. Kochkin %T Quasibound states in a magnetic field and the field of an impurity. Weak magnetic fields and potentials of arbitrary strength %J Teoretičeskaâ i matematičeskaâ fizika %D 1972 %P 239-250 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1972_12_2_a9/ %G ru %F TMF_1972_12_2_a9