On Copositive Approximation in Spaces of Continuous Functions II: The Uniqueness of Best Copositive Approximation. Analysis in Theory and Applications, [S. l.], v. 32, n. 1, p. 20–26, 2016. DOI: 10.4208/ata.2016.v32.n1.2. Disponível em: https://www.global-sci.com/index.php/ata/article/view/8075. Acesso em: 5 dec. 2025.