COHN, J. H. E. The Diophantine system $x^2-6y^2=-5,\ x=2z^2-1$. Mathematica Scandinavica, Berkeley, CA, United States, v. 82, n. 2, p. 161–164, 1998. DOI: 10.7146/math.scand.a-13830. Disponível em: https://journals.msp.org/mscand/article/view/998. Acesso em: 25 jul. 2026.