1. Khinchin, A. Ya., Continued Fractions, Moscow: Fizmatgiz, 1961; Mineola, NY: Dover, 1997.
2. Euler, L., De relatione inter ternas pluresve quantitates instituenda, 1785, All Works, p. 591.
3. Bruno, A.D., Local Methods in Nonlinear Differential Equations, Berlin: Springer, 1989.
4. Bruno, A.D., Computation of the fundamental units of number rings using a generalized continued fraction, Program. Comput. Software, 2019, vol. 45, no. 2, pp. 37–50. https://doi.org/10.1134/S036176881902004x
5. Thompson, I., Understanding Maple, Cambridge Univ. Press, 2016.