MARTYNYUK, D. I.; MITROPOLSKIY, Yu. A.; TYNNYI, V. I. Reducibility of linear systems of difference equations with almost periodic coefficients. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 12, p. 1661–1667, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5974. Acesso em: 14 apr. 2025.