On the spectrum of a two-dimensional periodic operator with a small localized perturbation
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Publication:5198502
DOI10.1070/IM2011v075n03ABEH002541zbMath1233.35066MaRDI QIDQ5198502
Publication date: 8 August 2011
Published in: Izvestiya: Mathematics (Search for Journal in Brave)
General topics in linear spectral theory for PDEs (35P05) Asymptotic expansions of solutions to PDEs (35C20) Schrödinger operator, Schrödinger equation (35J10)
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