Exterior Dirichlet Problem for Hessian Equations on a Non-Convex Ring. Journal of Mathematical Study, [S. l.], v. 59, n. 1, p. 16–39, 2026. DOI: 10.4208/jms.v59n1.26.02. Disponível em: https://global-sci.com/jms/article/view/23811. Acesso em: 2 apr. 2026.