Barreira, Luis, Meng Fan, Claudià Valls, and Jimin Zhang. “Robustness of Nonuniform Polynomial Dichotomies for Difference Equations”. Topological Methods in Nonlinear Analysis 37, no. 2 (April 23, 2011): 357–376. Accessed March 28, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2011.018.