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Martynyuk DI, Mitropolskiy YA, Tynnyi VI. Reducibility of linear systems of difference equations with almost periodic coefficients. Ukr. Mat. Zhurn. [Internet]. 1993 Dec. 25 [cited 2025 Apr. 13];45(12):1661–1667. Available from:
https://umj.imath.kiev.ua/index.php/umj/article/view/5974