GODWIN, H. J. The Determination of Fields of Small Discriminant With a Given Subfield. Mathematica Scandinavica, Berkeley, CA, United States, v. 6, p. 40–46, 1958. DOI: 10.7146/math.scand.a-10534. Disponível em: https://journals.msp.org/mscand/article/view/2814. Acesso em: 25 jul. 2026.