Luigi Provenzano, “A note on the Neumann eigenvalues of the biharmonic operator”, Math Methods in App Sciences, 41, № 3, 2018, 1005
Gerassimos Barbatis, Pier Domenico Lamberti, “SPECTRAL STABILITY ESTIMATES FOR ELLIPTIC OPERATORS SUBJECT TO DOMAIN TRANSFORMATIONS WITH NON‐UNIFORMLY BOUNDED GRADIENTS”, Mathematika, 58, № 2, 2012, 324
Davide Buoso, Pier Domenico Lamberti, “Shape deformation for vibrating hinged plates”, Math Methods in App Sciences, 37, № 2, 2014, 237
G. Karapetyan, N. Saribekyan, “Spectral stability of higher order semi-elliptic operators”, J. Contemp. Mathemat. Anal., 51, № 1, 2016, 1
Gerassimos Barbatis, Victor I. Burenkov, Pier Domenico Lamberti, 12, Around the Research of Vladimir Maz'ya II, 2010, 23
Davide Buoso, Pier Domenico Lamberti, “Eigenvalues of polyharmonic operators on variable domains”, ESAIM: COCV, 19, № 4, 2013, 1225
Francesco Ferraresso, Pier Domenico Lamberti, “On a Babuška Paradox for Polyharmonic Operators: Spectral Stability and Boundary Homogenization for Intermediate Problems”, Integr. Equ. Oper. Theory, 91, № 6, 2019, 55
Vladimir Gol’dshtein, Valerii Pchelintsev, Alexander Ukhlov, “Spectral stability estimates of Dirichlet divergence form elliptic operators”, Anal.Math.Phys., 10, № 4, 2020, 74
Begoña Barrios, Luigi Montoro, Ireneo Peral, Fernando Soria, “Neumann conditions for the higher order s-fractional Laplacian (−Δ)su with s>1”, Nonlinear Analysis, 193, 2020, 111368
V. I. Burenkov, V. Gol'dshtein, A. Ukhlov, “Conformal spectral stability estimates for the Neumann Laplacian”, Mathematische Nachrichten, 289, № 17-18, 2016, 2133