Carlos E. Arreche Arreche, C. E. (2017). Computation of the difference-differential Galois group and differential relations among solutions for a second-order linear difference equation. COMMUNICATIONS IN CONTEMPORARY MATHEMATICS, 19(6). https://doi.org/10.1142/s0219199716500565 Arreche, C. K., & Singer, M. F. (2017). Galois groups for integrable and projectively integrable linear difference equations. JOURNAL OF ALGEBRA, 480, 423–449. https://doi.org/10.1016/j.jalgebra.2017.02.032 Arreche, C. E. (2016). On the computation of the parameterized differential Galois group for a second-order linear differential equation with differential parameters. JOURNAL OF SYMBOLIC COMPUTATION, 75, 25–55. https://doi.org/10.1016/j.jsc.2015.11.006