KURSHAN, R. P.; ODLYZOKO, A. M. Values of cyclotomic polynomials at roots of unity. Mathematica Scandinavica, Berkeley, CA, United States, v. 49, p. 15–35, 1981. DOI: 10.7146/math.scand.a-11919. Disponível em: https://journals.msp.org/mscand/article/view/1752. Acesso em: 25 jul. 2026.