STRAY, A. Simultaneous approximation in the Dirichlet space. MATHEMATICA SCANDINAVICA, [S. l.], v. 89, n. 2, p. 268–282, 2001. DOI: 10.7146/math.scand.a-14341. Disponível em: https://www.mscand.dk/article/view/14341. Acesso em: 2 may. 2024.