VILLEGAS, S.; CAÑADA, A. Matrix Lyapunov inequalities for ordinary and elliptic partial differential equations. Topological Methods in Nonlinear Analysis, [S. l.], v. 45, n. 2, p. 309–326, 2015. DOI: 10.12775/TMNA.2015.016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2015.016. Acesso em: 29 mar. 2024.