Eigenvalues of Elliptic Systems for the Mixed Problem in Perturbations of Lipschitz Domains with Nonhomogeneous Neumann Boundary Conditions. J. Part. Diff. Eq. [Internet]. 2020 May 12 [cited 2026 Mar. 17];33(1):48-63. Available from: https://staging.gsp.tricubic.dev/jpde/article/view/14924