Mignotte, M. and Pethö, A. 1995. On the System of Diophantine Equations $x^2 - 6y^2 = -5$ and $x= 2z^2 - 1$. MATHEMATICA SCANDINAVICA. 76, (Dec. 1995), 50–60. DOI:https://doi.org/10.7146/math.scand.a-12524.