STRAY, Arne. 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://tidsskrift.dk/math/article/view/14341. Acesso em: 14 aug. 2026.