Families of Lyapunov’s Functions for Existence of Almost Periodic Solutions of $( h_0,h)$-stable Impulsive Differential Equations. Nonlinear Studies, [S. l.], v. 10, n. 2, 2003. Disponível em: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/157. Acesso em: 15 oct. 2025.