MEL'NYK, O. M. Construction of unital matrix polynomials with mutually distinct characteristic roots. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 1, p. 69–76, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5784. Acesso em: 5 dec. 2025.