1. J. J. Bravo and F. Luca, “Powers of two in generalized Fibonacci sequences,” Rev. Colomb. Mat. 46 (1), 67–79 (2012).
2. E. Kılıç and D. Taşcı, “The generalized Binet formula, representation and sums of the generalized order-$$k$$ Pell numbers,” Taiwanese J. Math. 10 (6), 1661–1670 (2006).
3. W. Ljunggren, “Zur Theorie der Gleichung $$x^{2}+1=Dy^{4}$$,” Avh. Norske Vid. Akad. Oslo, No. 5, 333–341 (1942).
4. J. H. E. Cohn, “Square Fibonacci numbers, etc.,” Fibonacci Q. 2, 109–113 (1964).
5. Colloq. Math. Soc. János Bolyai;A. Pethö,1992