LJUNGGREN, W. On the Diophantine Equation $Ax^4-By^2=C$, ($C=1,4$). MATHEMATICA SCANDINAVICA, [S. l.], v. 21, p. 149–158, 1967. DOI: 10.7146/math.scand.a-10855. Disponível em: https://www.mscand.dk/article/view/10855. Acesso em: 24 nov. 2024.