LUCA, F.; TOGBÉ, A. On the $x$-coordinates of Pell equations which are Fibonacci numbers. MATHEMATICA SCANDINAVICA, [S. l.], v. 122, n. 1, p. 18–30, 2018. DOI: 10.7146/math.scand.a-97271. Disponível em: https://www.mscand.dk/article/view/97271. Acesso em: 19 oct. 2021.