DIBLIK, J.; FEČKAN, M.; POSPÍŠIL, M. Representation of a solution of the Cauchy problem for an oscillating system with two delays and permutable matrices. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 1, p. 58–69, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2404. Acesso em: 5 dec. 2025.