Shorey, T. N., and C. L. Stewart. “On the Diophantine Equation $ax^{2t}+bx^ty+cy^2=d$ and Pure Powers in Recurrence Sequences”. MATHEMATICA SCANDINAVICA 52 (December 1, 1983): 24–36. Accessed May 5, 2024. https://www.mscand.dk/article/view/11990.