CHRISTENSEN, J. P. R. Remarks on Namioka spaces and R. E. Johnson’s theorem on the norm seperability of the range of certain mappings. MATHEMATICA SCANDINAVICA, [S. l.], v. 52, p. 112–116, 1983. DOI: 10.7146/math.scand.a-11998. Disponível em: https://www.mscand.dk/article/view/11998. Acesso em: 5 may. 2024.