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Polyakov Yu I
Publications in Math-Net.Ru
Perturbation theory for particle in one-dimensional, central- or axial-symmetric fields
TMF
,
112
:1 (1997),
119–123
Algorithm of Rayleigh–Schrödinger perturbation theory for hermitian operators
TMF
,
18
:3 (1974),
374–382
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Steklov Math. Inst. of RAS
, 2024