Dynamics of a fractional breast cancer model: Existence, stability, and Ulam–Hyers robustness. Nonlinear Studies, [S. l.], v. 33, n. 1, p. 83–112, 2026. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/4171. Acesso em: 28 feb. 2026.