CAMPITI, Michele. Korovkin approximation of non-convex set-valued continuous functions. Modern Mathematical Methods, [S. l.], v. 4, n. 1, p. 30–37, 2026. DOI: 10.64700/mmm.100. Disponível em: https://modernmathmeth.com/index.php/pub/article/view/100. Acesso em: 16 apr. 2026.