Lyalinov, Mikhail A. Functional difference equations and eigenfunctions of a Schrödinger operator with \(\delta' -\) interaction on a circular conical surface. (English) Zbl 1472.35105 Proc. R. Soc. Lond., A, Math. Phys. Eng. Sci. 476, No. 2241, Article ID 20200179, 23 p. (2020). MSC: 35J05 39A13 81Q10 PDF BibTeX XML Cite \textit{M. A. Lyalinov}, Proc. R. Soc. Lond., A, Math. Phys. Eng. Sci. 476, No. 2241, Article ID 20200179, 23 p. (2020; Zbl 1472.35105) Full Text: DOI Link
Fedotov, A. A. Adiabatic almost-periodic Schrödinger operators. (English. Russian original) Zbl 1237.34147 J. Math. Sci., New York 173, No. 3, 299-319 (2011); translation from Zap. Nauchn. Semin. POMI 379, 103-141 (2010). Reviewer: Khanlar R. Mamedov (Artvin) MSC: 34L40 47E05 PDF BibTeX XML Cite \textit{A. A. Fedotov}, J. Math. Sci., New York 173, No. 3, 299--319 (2011; Zbl 1237.34147); translation from Zap. Nauchn. Semin. POMI 379, 103--141 (2010) Full Text: DOI