MEZEI, R. A. Applications and Lipschitz results of approximation by smooth Picard and Gauss-Weierstrass type singular integrals. CUBO, A Mathematical Journal, [S. l.], v. 13, n. 3, p. 17–48, 2011. DOI: 10.4067/S0719-06462011000300002. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1360. Acesso em: 19 may. 2024.