SCHNEPS, Leila. On Cyclic Field Extensions of Degree 8. Mathematica Scandinavica, Berkeley, CA, United States, v. 71, p. 24–30, 1992. DOI: 10.7146/math.scand.a-12408. Disponível em: https://journals.msp.org/mscand/article/view/1242. Acesso em: 25 jul. 2026.