SCHMIDT, A. L. Approximation Theorems of Borel and Fujiwara. MATHEMATICA SCANDINAVICA, [S. l.], v. 14, p. 35–38, 1964. DOI: 10.7146/math.scand.a-10703. Disponível em: https://www.mscand.dk/article/view/10703. Acesso em: 24 nov. 2024.