LE, Maohua. On the Diophantine System $x^2 - Dy^2 = 1-D$ and $x=2z^2-1$. Mathematica Scandinavica, Berkeley, CA, United States, v. 95, n. 2, p. 171–180, 2004. DOI: 10.7146/math.scand.a-14455. Disponível em: https://journals.msp.org/mscand/article/view/764. Acesso em: 24 jul. 2026.