Andrii Khrabustovskyi, Michael Plum, “Spectral properties of an elliptic operator with double-contrast coefficients near a hyperplane”, ASY, 98, № 1-2, 2016, 91
Delfina Gómez, Sergei A. Nazarov, Rafael Orive-Illera, María-Eugenia Pérez-Martínez, “Spectral gaps in a double-periodic perforated Neumann waveguide”, ASY, 131, № 3-4, 2023, 385
S. A. Nazarov, “Threshold resonances and virtual levels in the spectrum of cylindrical and periodic waveguides”, Izv. Math., 84, № 6, 2020, 1105
D. I. Borisov, P. Exner, “Gap opening in two-dimensional periodic systems”, Commun. Contemp. Math., 23, № 01, 2021, 1950080
Konstantin Pankrashkin, Nicolas Popoff, “An effective Hamiltonian for the eigenvalue asymptotics of the Robin Laplacian with a large parameter”, Journal de Mathématiques Pures et Appliquées, 106, № 4, 2016, 615
S. A. Nazarov, “Asymptotics of Eigenvalues in Spectral Gaps of Periodic Waveguides with Small Singular Perturbations”, J Math Sci, 243, № 5, 2019, 746
S. A. Nazarov, “Gap Opening Around a Given Point of the Spectrum of a Cylindrical Waveguide by Means of a Gentle Periodic Perturbation of Walls”, J Math Sci, 206, № 3, 2015, 288
I. Y. Popov, I. V. Blinova, A. I. Popov, “A model of a boundary composed of the Helmholtz resonators”, Complex Variables and Elliptic Equations, 66, № 8, 2021, 1256
S. A. Nazarov, “Anomalies of Acoustic Wave Scattering Near the Cut-off Points of Continuous Spectrum (A Review)”, Acoust. Phys., 66, № 5, 2020, 477
Sergei Aleksandrovich Nazarov, “Пороговые резонансы и виртуальные уровни в спектре цилиндрических и периодических волноводов”, Известия Российской академии наук. Серия математическая, 84, № 6, 2020, 73