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F. L. Bakharev, “Spectral gaps in the Dirichlet problem for the biharmonic operator on a plane periodically perforated by circular holes”, Vestnik St.Petersb. Univ.Math., 46, no. 2, 2013, 76
Giuseppe Cardone, Andrii Khrabustovskyi, “Spectrum of a singularly perturbed periodic thin waveguide”, Journal of Mathematical Analysis and Applications, 454, no. 2, 2017, 673
F. L. Bakharev, J. Taskinen, “Bands in the spectrum of a periodic elastic waveguide”, Z. Angew. Math. Phys., 68, no. 5, 2017, 102
Sergei A. Nazarov, Jari Taskinen, “Essential spectrum of a periodic waveguide with non-periodic perturbation”, Journal of Mathematical Analysis and Applications, 463, no. 2, 2018, 922
Sergei A. Nazarov, Jari Taskinen, “Elastic and piezoelectric waveguides may have infinite number of gaps in their spectra”, Comptes Rendus. Mécanique, 344, no. 3, 2016, 190
F.L. Bakharev, S.A. Nazarov, K.M. Ruotsalainen, “A gap in the spectrum of the Neumann–Laplacian on a periodic waveguide”, Applicable Analysis, 92, no. 9, 2013, 1889
L. D'Elia, S.A. Nazarov, “Gaps in the spectrum of two-dimensional square packing of stiff disks”, Applicable Analysis, 102, no. 9, 2023, 2611
Sergei A. Nazarov, Jari Taskinen, “Spectral gaps for periodic piezoelectric waveguides”, Z. Angew. Math. Phys., 66, no. 6, 2015, 3017
Jari Taskinen, 292, Operators, Semigroups, Algebras and Function Theory, 2023, 199