POSPÍŠIL, Michal. Representation of solutions of systems of linear differential equations with multiple delays and nonpermutable variable coefficients. Mathematical Modelling and Analysis, [S. l.], v. 25, n. 2, p. 303–322, 2020. DOI: 10.3846/mma.2020.11194. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/11194. Acesso em: 11 may. 2025.