BJÖRNSSON, Ottó J. A note on the characterization of standard Borel spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 47, p. 135–136, 1980. DOI: 10.7146/math.scand.a-11879. Disponível em: https://tidsskrift.dk/math/article/view/11879. Acesso em: 14 aug. 2026.