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Erratum to: On Perturbations of the Spectrum of a One-Dimensional $$\mathcal{PT}$$-Symmetric Periodic Schrödinger Operator

Crossref DOI link: https://doi.org/10.1134/S156035472601003X

Published Online: 2026-02-12

Published Print: 2026-02

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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