STOIMENOW, A. On unknotting numbers and knot trivadjacency. Mathematica Scandinavica, Berkeley, CA, United States, v. 94, n. 2, p. 227–248, 2004. DOI: 10.7146/math.scand.a-14441. Disponível em: https://journals.msp.org/mscand/article/view/778. Acesso em: 24 jul. 2026.