BANCHOFF, Thomas F.; WHITE, James H. The behaviour of the total twist and self-linking number of a closed space curve under inversions. Mathematica Scandinavica, Berkeley, CA, United States, v. 36, p. 254–262, 1975. DOI: 10.7146/math.scand.a-11574. Disponível em: https://journals.msp.org/mscand/article/view/2040. Acesso em: 25 jul. 2026.