JONASSEN, Arne T. On the Irreducibility of the Trinomials $x^m\pm x^n\pm 4$. Mathematica Scandinavica, Berkeley, CA, United States, v. 21, p. 177–189, 1967. DOI: 10.7146/math.scand.a-10857. Disponível em: https://journals.msp.org/mscand/article/view/2465. Acesso em: 25 jul. 2026.