WANG, J. L.- ming. Modulus of Approximate Continuity for $R(X)$. MATHEMATICA SCANDINAVICA, [S. l.], v. 34, p. 219–225, 1974. DOI: 10.7146/math.scand.a-11522. Disponível em: https://www.mscand.dk/article/view/11522. Acesso em: 24 nov. 2024.