FABRICIUS-BJERRE, Fr. On cyclic curves in the Euclidean $n$-space. Mathematica Scandinavica, Berkeley, CA, United States, v. 36, p. 229–253, 1975. DOI: 10.7146/math.scand.a-11573. Disponível em: https://journals.msp.org/mscand/article/view/2043. Acesso em: 25 jul. 2026.