New results in the study of a multi-point boundary value problem with higher order Riemann-Liouville fractional derivative. Nonlinear Studies, [S. l.], v. 31, n. 3, p. 795–814, 2024. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/3392. Acesso em: 11 oct. 2025.