TUKIA, Pekka. The space of quasisymmetric mappings. Mathematica Scandinavica, Berkeley, CA, United States, v. 40, p. 127–142, 1977. DOI: 10.7146/math.scand.a-11682. Disponível em: https://journals.msp.org/mscand/article/view/1967. Acesso em: 25 jul. 2026.