AGARWAL, R. P. .; HRISTOVA, S. .; O’REGAN, D. . Ulam Stability for Nonlinear Fractional Differential Equations with Multi-Term and Nonlocal Multi-Point Boundary Value Problem. Contemporary Mathematics , [S. l.], v. 6, n. 4, p. 4504–4520, 2025. DOI: 10.37256/cm.6420257261. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/7261. Acesso em: 15 dec. 2025.