V. I. Tkachenko, “On the exponential dichotomy of linear difference equations”, Ukr. Mat. Zhurn., vol. 48, no. 10, pp. 1409–1416, Oct. 1996, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5226