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 2025 Dec. 6];33(1):48-63. Available from: https://global-sci.com/index.php/jpde/article/view/14924