Eigenvalues of Elliptic Systems for the Mixed Problem in Perturbations of Lipschitz Domains with Nonhomogeneous Neumann Boundary Conditions. Journal of Partial Differential Equations, [S. l.], v. 33, n. 1, p. 48–63, 2020. DOI: 10.4208/jpde.v33.n1.4. Disponível em: https://www.global-sci.com/index.php/jpde/article/view/14924. Acesso em: 6 dec. 2025.