Examples of Twice Differentiable Functions with Continuous Laplacian and Bounded Discontinuous Hessian. Analysis in Theory and Applications, [S. l.], v. 40, n. 3, p. 311–334, 2024. DOI: 10.4208/ata.OA-2024-0017. Disponível em: https://www.global-sci.com/index.php/ata/article/view/8298. Acesso em: 5 dec. 2025.