Existence and Hyers-Ulam stability of random coupled system of multi-fractional differential equations in generalized Banach space. Nonlinear Studies, [S. l.], v. 31, n. 2, 2024. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/3605. Acesso em: 12 sep. 2025.