HUDSON, Sigmund N. A Note on Invariant Uniformities in Coset Spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 12, p. 36–38, 1963. DOI: 10.7146/math.scand.a-10670. Disponível em: https://tidsskrift.dk/math/article/view/10670. Acesso em: 14 aug. 2026.