Martynyuk DI, Mitropolskiy YA, Tynnyi VI. Reducibility of linear systems of difference equations with almost periodic coefficients. Ukr. Mat. Zhurn. [Internet]. 1993Dec.25 [cited 2024Jul.27];45(12):1661–1667. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5974