COHN, J. H. E. The Diophantine equation $y^2=Dx^4+1$, III. Mathematica Scandinavica, Berkeley, CA, United States, v. 42, p. 180–188, 1978. DOI: 10.7146/math.scand.a-11746. Disponível em: https://journals.msp.org/mscand/article/view/1900. Acesso em: 25 jul. 2026.